SLIDE RULE CATALOGUE L I T E

 

Sub-List :  Keuffel & Esser

 

 

 

NAME

MATCH
NR.

DESCRIPTION

Keuffel & Esser < 4053 - 3F > dated 1913

4122

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser < 4031 > Mannheim Adjustable

4050

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4031 > Mannheim Adjustable dated 1903, 1906, 1909 and 1913

4049

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4031 > Mannheim Adjustable, dated 1900 and 1901

4048

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4031 > Mannheim Adjustable, dated 1914

4519

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser < 4031 > Mannheim Adjustable, dated 1915 (other example)

4743

Generic slide rule

Keuffel & Esser < 4031 > Mannheim Adjustable, dated 1915 (other example)

4744

Generic slide rule

Keuffel & Esser < 4031 > Mannheim Adjustable, dated 1925 (other example)

4746

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4031 > S Mannheim Adjustable, dated 1922

4051

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4031 > S Mannheim Adjustable, dated 1922 (other example)

4745

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4031 > S Mannheim Adjustable, dated 1925

4052

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4031 > S Mannheim Adjustable, dated 1925 (other example)

4747

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4035 > Mannheim Adjustable dated 1906

4054

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4035 > Mannheim Adjustable dated 1915

4056

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4035 > Mannheim Adjustable, dated 1914

4520

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser < 4041 > Mannheim, dated 1908

4678

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser < 4041 > Mannheim, dated 1909

4656

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser < 4041 > Mannheim, dated 1921

4518

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser < 4041 > Mannheim, dated 1921 and 1922

4654

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser < 4041 F > Mannheim, dated 1915

4067

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4045 > Mannheim Adjustable

4082

Generic slide rule of Engine divided celluloid laminated mahogany, 420x36x13 mm (1915, 1921, 1922, 1925, 1927, 1930)
Front Scales: 16inch / A = B C = D ] 42cm
Back Scales: = S L T =

Keuffel & Esser < 4053 - 2 > Polyphase Mannheim Adjustable, dated 1915 and 1921

4102

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4053 - 2 > Polyphase Mannheim Adjustable, dated 1914

4525

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4053 - 2 > Polyphase Mannheim Adjustable, dated 1915 (other example)

4751

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser < 4053 - 2 > Polyphase Mannheim Adjustable, dated 1915 (other example)

4752

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser < 4053 - 3 > Polyphase Mannheim Adjustable

4106

Generic slide rule of Engine divided celluloid laminated mahogany, 270x34.5x10 mm (1913)
Front Scales: 10inch / A = B CI C = D ] K
Back Scales: = S L T =

Keuffel & Esser < 4053 - 3 > Polyphase Mannheim Adjustable

4107

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4053 - 3 > Polyphase Mannheim Adjustable

4498

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser < 4053 - 3F > Poly Keuffel & Esser 4053- 2S Mannheim Adjustable dated 1913 (other example) Magnifier

4757

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4053 - 3F > Poly Mannheim Adjustable dated 1913 (other example). Magnifier

4756

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4053 - 3F > Polyphase Mannheim (other example) Adjustable Magnifier

4755

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4053 - 5 > Polyphase Mannheim Adjustable Dated 1914

4527

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4053 > Polyphase Slide Rule, Mannheim Adjustable

4094

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4054 > Favorite (Mannheim) adjustable

4144

Generic slide rule of Engine divided celluloid laminated mahogany, 270x2910.5 mm (1906, 1909, 1913, 1915, 1921, 1922, 1925)
Front Scales: A = B C = D, Back Scales: = S L T =

Keuffel & Esser < 4054 > Polyphase (Mannheim)

4145

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4055 > Favorite Adjustable (Mannheim)

4147

Generic slide rule of Engine divided celluloid laminated mahogany, 271x285x105 mm (1936, 1937, 1939, 1943)
Front Scales: A = B C = D, Back Scales: = S L T =

Keuffel & Esser < 4070 - 3 > Polyphase Duplex Trig

4562

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser < 4071 - 3 > Polyphase Duplex Decitrig

4190

Generic slide rule of Engine divided celluloid laminated mahogany, 310x33x6 mm (1939, 1943, 1944, 1947, 1949, 1954, 1955)
Front Scales: K A = B T ST S = D DI
Back Scales: DF = CF CIF CI C = D L

Keuffel & Esser < 4071 > Duplex

4189

Generic slide rule of Engine divided celluloid laminated mahogany, 308x27x6.7 mm (1915)
Front Scales: A = B C = D, Back Scales: A = BI CI = D

Keuffel & Esser < 4071 T > Duplex, with Trig Scale, L scale on back, not on edge, dated 1915

4547

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4071 T > Duplex, with Trig Scales, dated 1909

4196

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4080 - 3 > Log Log Duplex Trig

4208

Generic slide rule of Engine divided celluloid laminated mahogany, 318x40.5x6.5 mm (1939, 1943, 1944, 1947)
Front Scales: LL0 LL00 A = B T ST S = D DI K
Back Scales: L LL1 DF = CF CIF CI C = D LL3 LL2

Keuffel & Esser < 4080 - 3 > Log Log Duplex Trig

4618

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4080 - 3 > Log Log Duplex Trig. Replaced 4090-3

4206

Generic slide rule of Engine divided celluloid laminated mahogany, 318x40.5x6.5 mm (1937)
Front Scales: LL00 LL0 A = B T ST S = D DI K
Back Scales: L LL1 DF = CF CIF CI C = D LL3 LL2

Keuffel & Esser < 4080 - 3 > S Log Log Duplex Trig

4209

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4080 - 5 > Log Log Duplex Trig

4216

Generic slide rule, 565x40.6x8 mm (1939, 1943, 1944, 1947)
Front Scales: LL0 LL00 A = B T ST S = D DI K
Back Scales: L LL1 DF = CF CIF CI C = D LL3 LL2

Keuffel & Esser < 4080 - 5 > S Log Log Duplex Trig

4217

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4081 - 3 > Log Log Duplex Decitrig

4237

Generic slide rule of Engine divided celluloid laminated mahogany, 318x41x6.5 mm (1939, 1943, 1944, 1947)
Front Scales: LL0 LL00 A = B T ST S = D DI K
Back Scales: L LL1 DF = CF CIF CI C = D LL3 LL2

Keuffel & Esser < 4081 - 5 > Log Log Duplex Decitrig,

4253

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4081 - 5 > S Log Log Duplex Decitrig

4254

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4082 - 3 >

4262

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4087 > Duplex

4288

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4088 - 3 > Polyphase Duplex

4301

Generic slide rule of Engine divided celluloid laminated mahogany, 308x30.4x6.6 mm (1915, 1921)
Front Scales: K A = S T CI = D L
Back Scales: DF = CF CIF C = D

Keuffel & Esser < 4088 - 3 > Polyphase Duplex, dated 1913

4300

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4091 - 3 > Log Log Decitrig. Replaced by 408 - 3

4320

Generic slide rule of Engine divided celluloid laminated mahogany, 308x30.4x6.6 mm (1936, 1937P-d)
Front Scales: LL0 A = B K CI = T S2 S1
Back Scales: L LL1 DF = CF CIF C = D LL3 LL2

Keuffel & Esser < 4092 - 3 > Log Log Duplex

4326

Generic slide rule of Engine divided celluloid laminated mahogany, 318x41x65 mm (1922)
Front Scales: LL0 A = B S T C = LL3 LL2 LL1
Back Scales: K DF = CF CIF CI C = D L

Keuffel & Esser < 4097 C >

4762

Generic slide rule

Keuffel & Esser < 4097 C > Ever - There, (Old 4098)

5049

Generic slide rule of Engine Divided White Xylonite, 153x33x3.5 mm (1936, 1937, 1939, 1943, 1944, 1947, 1949)
Front Scales: A = B CI C = D K
Back Scales: 5inch = S L T = 13cm

Keuffel & Esser < 4097 C > Ever - There, 1936 (Old 4098)

4373

Generic slide rule of Engine Divided White Xylonite, 153x33x3.5 mm (1936, 1937, 1939, 1942, 1943, 1944, 1947, 1949, 1952)
Front Scales: A = B CI C = D K, Back Scales: = S L T =

Keuffel & Esser < 4100 >

4684

Generic slide rule

Keuffel & Esser < 4100 > S Stadia

4385

Generic slide rule of Engine divided celluloid laminated mahogany, 260x25x10 mm (1922)
Front Scales: R = H HC V = A, Back Scales: = C B = Second line, ' "Rc" the corrected rod reading = 100 X rod reading + (f + c), '

Keuffel & Esser < 4101 > Stadia

4394

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4110 > Special Rule made for Annapolis

4408

Generic slide rule of Engine divided celluloid laminated mahogany, [from Clark mccoy - built on the N4096 desktop rule frame, using the N4096 improved indicator], 260x25x10 mm (1942 - JOS, Mar. 1993)
Front Scales: P F A = B T S CI C = D, Back Scales:

Keuffel & Esser < 4138 > Morrison Radio Engineer's Slide Rule

4427

Log/tech slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < 4139 > Cooke Radio Slide Rule

4429

Generic slide rule of Engine divided celluloid laminated mahogany, 310x33x6.5 mm (1943, 1944, 1947, 1949, 1954, 1955)
Front Scales: LC A = B T ST S = D DI
Back Scales: L DF = CF CIF CI C = D 2_

Keuffel & Esser < 4165 > of Match no. 4460

4730

Generic slide rule

Keuffel & Esser < 4175 > Kurtz Psychrometric

4465

Technical slide rule of wood/celluloid, 300x40x10 mm (1936, 1937, 1939)
Front Scales: 1 2 = 3 4 5 = 6 7 8 9 10 11

Keuffel & Esser < 9071 - 3 > Doric

4192

Generic slide rule of Engine Divided White Xylonite

Keuffel & Esser < N 4041 > dated 1925 (other example)

4749

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser < N 4041 > Mannheim Adjustable, dated 1936 thru 1943

4078

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < N 4053 - 3 >

4581

Generic slide rule of wood/celluloid

Keuffel & Esser < N 4053 - 3 >

4727

Generic slide rule

Keuffel & Esser < N 4053 - 3 > Polyphase Mannheim Adjustable

4110

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < N 4053 - 3 > Polyphase Mannheim Adjustable

4113

Generic slide rule of Engine divided celluloid laminated mahogany, 270x35x10 mm (1936, 1937, 1939, 1943, 1944, 1947, 1949)
Front Scales: 10inch / A = B CI C = D K ] 25cm
Back Scales: = S L T =

Keuffel & Esser < N 4053 - 3 > S Polyphase Mannheim Adjustable

4580

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < N 4053 - 3F > S Polyphase Mannheim Adjustable

4127

Generic disc of Engine divided celluloid laminated mahogany

Keuffel & Esser < N 4053- 2 > Mannheim Adjustable, dated 1924 (other example)

4754

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser < N 4096 > Desk Slide Rule, (same as other N 4096, but without stand, knob, or special case)

4366

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser <4071 - 3> Polyphase Duplex Decitrig

0113

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser <4071 - 3> Polyphase Duplex Decitrig

4568

Slide rule of engine divided celluloid laminated mahogany, with exposed mahogany strips on edge

Keuffel & Esser <4071 T> Duplex with Trig scales, L scale on back, not on edge, dated 1913

4499

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser <4090 - 3> S Log Log Trig. Replaced by 4080 - 3S

4317

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 10002 Doric with trigonometrical scales divided to represent degrees and minutes

4002

Slide rule of plastic

Keuffel & Esser 1742 - 4 Crane's Sewer Slide Rule

4765

Log/tech slide rule

Keuffel & Esser 1743 Charpentier Calculator, dated 1895

4013

Disc of metal

Keuffel & Esser 1744 1/2 Duplex, dated 1899

4022

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser 1744 Duplex with arithmetical slide, dated 1895, Cox's Patent

4020

Generic slide rule of engine divided celluloid laminated wood

Keuffel & Esser 1749 - 4 Crane's Sewer Slide Rule

4410

Slide rule

Keuffel & Esser 1749 Stadia

4379

Slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser 4012 Thacher cylinder

4005

Generic cylinder

Keuffel & Esser 4012 Thacher cylinder (other example, dated 1910)

4740

Generic cylinder

Keuffel & Esser 4017 Sperry, watch style Pat Oct. 25 1904

4040

Generic watch type of metal/glass

Keuffel & Esser 4017 Sperry's Calculator Pat. Dec. 26. 1911

4041

Generic watch type of metal/glass

Keuffel & Esser 4020 Charpentier Calculator, dated 1906

4014

Disc of metal

Keuffel & Esser 4040 Mannheim dated 1901

4060

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 4041 (No number on rule) dated pre 1909

4731

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser 4041 dated 1906

5808

Generic slide rule

Keuffel & Esser 4041 dated 1906 (other example)

4763

Generic slide rule

Keuffel & Esser 4041 dated 1906 (other example)

4772

Generic slide rule

Keuffel & Esser 4041 dated 1922

5807

Generic slide rule

Keuffel & Esser 4041 F Mannheim, dated 1906

4062

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 4041 Mannheim, dated 1903

4655

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser 4041 Mannheim, dated 1906

4748

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser 4041 Mannheim, dated 1906 (other example)

4061

Generic slide rule of Engine divided celluloid laminated mahogany, 270x31x10 mm (1906)
Front Scales: 10inch / A = B C = D ] 27cm #28-52cm#
Back Scales: = S L T =

Keuffel & Esser 4041 Mannheim, dated 1909

4680

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 4041 Mannheim, dated 1915

4066

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 4041 Mannheim, dated 1922

4677

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser 4053 - 3 Polyphase Mannheim Adjustable

4582

Generic slide rule of Engine divided celluloid laminated mahogany, with molded plastic back, 278x35x8 mm (1956)
Front Scales: 10inch / A = B CI C = D K \ 25cm
Back Scales: = S L T =

Keuffel & Esser 4053 - 3S Polyphase Mannheim Adjustable

4583

Generic slide rule of Engine divided celluloid laminated mahogany, with molded plastic back

Keuffel & Esser 4053 - 3S Polyphase Mannheim Adjustable,

4118

Generic slide rule of Engine divided celluloid laminated mahogany, with molded plastic back

Keuffel & Esser 4058

4729

Generic slide rule

Keuffel & Esser 4058 Student's Slide Rule, printed on light-colored wood, with steel spring

4153

Generic slide ruleslide rule of Light colored wood, 270x29x9 mm (1915, 1921, 1922)
Front Scales: A = B C = D, Back Scales: = S L T =

Keuffel & Esser 4058 W Beginners' Slide Rule

4161

Student slide rule of Light colored wood, 270x28.5x9 mm (1942,1943)
Front Scales: A = B C = D, Back Scales: = S L T =

Keuffel & Esser 4060 Cox's Patent

5804

Generic slide rule

Keuffel & Esser 4060 Cox's Patent

5806

Generic slide rule

Keuffel & Esser 4065 T Duplex Trig

4174

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 4070

4182

Generic slide rule

Keuffel & Esser 4070 Duplex

4183

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 4070 Duplex

4183

Generic slide rule

Keuffel & Esser 4076 Duplex, Interchangeable Slides

4200

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 4081 - 3 Log Log Duplex Decitrig

4243

Generic slide rule of Engine divided celluloid laminated mahogany, 318x41x6.5 mm (1953, 1954, 1955)
Front Scales: LL01 L K A = B T ST S = D DI LL1
Back Scales: LL02 LL03 DF = CF CIF CI C = D LL3 LL2

Keuffel & Esser 4081 - 3S Log Log Duplex Decitrig

4244

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 4081 - 3S Log Log Duplex Decitrig

4606

Generic slide rule of Engine divided celluloid laminated mahogany, with exposed mahogany edges

Keuffel & Esser 4083 - 3 Log Log Duplex Vector

4502

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 4083 - 3 Log Log Duplex Vector (Also no. 68 - 1434)

4570

Generic slide rule of Engine divided celluloid laminated mahogany, with exposed mahogany edges

Keuffel & Esser 4087 Duplex

4289

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 4090 Original prototype for 4090 Universal rule

4622

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser 4090 Original prototype for 4090 Universal rule, dated 1899

4621

Generic slide rule of engine divided hard wood

Keuffel & Esser 4090 Universal, 2 attached slides, dated 1901, 1903

4313

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser 4095 - 3 Merchants' Adjustable Duplex

4355

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 4095 Triangular Metal

4346

Generic slide rule of metal

Keuffel & Esser 4098 A Pocket Slide Rule

4378

Generic slide rule of Engine Divided White Xylonite, 153x33x3.5 mm (1936, 1937, 1939, 1943, 1944, 1947, 1949)
Front Scales: A = B C = D
Back Scales: 5inch = S L T = 13cm

Keuffel & Esser 4100 Stadia

4384

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 4108 Military Slide Rule

4095

Military slide rule of Engine divided celluloid laminated mahogany, 285x40.9x10.3 mm (1960)
Front Scales: Deg. Mils = Mils Apex Angle CI Base C = Range D A, Back Scales: = Tan Sin - Tan Sin C =

Keuffel & Esser 4128 Nordell Sewer Slide Rule, Duplex Type

4415

Log/tech slide rule

Keuffel & Esser 4141 Hudson's Horsepower Computing Scale

4434

Technical slide rule of boxwood

Keuffel & Esser 4143 Kissam Stadia (Also no. 68 1486)

4440

Log/tech slide rule

Keuffel & Esser 4150 - 1 Pocket Slide Rule

4349

Generic slide rule of Ivorite Precison Molded ABS

Keuffel & Esser 4165 Urea Index Rule

4460

Medical slide rule

Keuffel & Esser 4168 Doric Pocket Slide Rule

4478

Generic slide rule of Ivorite Precison Molded ABS, 170x28.5x3.5 mm (1954, 1955)
Front Scales: K A = B ST S = D T
Back Scales: DF = CF CI C = D L

Keuffel & Esser 4181 - 1 Pocket Slide Rule (B1. and A2.)

4229

Generic slide rule of Ivorite Precison Molded ABS, 177x38x4 mm (1954, 1955)
Front Scales: LL01 L K A = B T ST S = D DI LL1
Back Scales: LL02 LL03 DF = CF CIF CI C = D LL3 LL2

Keuffel & Esser 4181 - 3 Log Log Duplex Decitrig

4245

Generic slide rule of Ivorite Precison Molded ABS, 317x41x4.5 mm (1954, 1955)
Front Scales: LL01 L K A = B T SRT S = D DI LL1
Back Scales: LL02 LL03 DF = CF CIF CI C = D LL3 LL2

Keuffel & Esser 4yyy

5094

Generic slide rule, 1023x38 mm
Front Scales: 50cm / A = B C = D #51-101cm#
Back Scales: = S T scale 0-1000 =

Keuffel & Esser 68 - 1100 Deci-Lon 10 Instruction model

4468

Generic slide rule of Ivorite Precison Molded ABS, 323x49x4.5 mm (1962, 1967)
Front Scales: Ln-3 Ln-2 Ln-1 Ln-0 A = B T SRT S C = D DI K
Back Scales: Sq1 Sq2 DF = CF CIF L CI C = D Ln0 Ln1 Ln2 Ln3

Keuffel & Esser 68 - 1130 Deci-Lon 5

4469

Generic slide rule of Ivorite Precison Molded ABS, 182x49.5x3.8 mm (1962, 1964, 1967, 1972)
Front Scales: Ln-3 Ln-2 Ln-1 Ln-0 A = B T SRT S C = D DI K
Back Scales: Sq1 Sq2 DF = CF CIF L CI C = D Ln0 Ln1 Ln2 Ln3

Keuffel & Esser 68 - 1210 Decitrig, with sewed leather, chamois lined case, with belt carrier

4248

Generic slide rule of Engine divided celluloid laminated mahogany, 318x415x7 mm (1962, 1967, 1972)
Front Scales: LL01 L K A = B T SRT S = D DI LL1
Back Scales: LL02 LL03 DF = CF CIF CI C = D LL3 LL2

Keuffel & Esser 68 - 1251 Jet-Log (A. and B.)

4251

Generic slide rule of Ivorite Precison Molded ABS

Keuffel & Esser 68 - 1256 Jet-Log (A. and B.)

4252

Generic slide rule of Ivorite Precison Molded ABS

Keuffel & Esser 68 - 1318 Log Log Duplex Trig

4214

Generic slide rule of Engine divided celluloid laminated mahogany, 319x415x7 mm (1962, 1967)
Front Scales: LL01 L K A = B T SRT S = D DI LL1
Back Scales: LL02 LL03 DF = CF CIF CI C = D LL3 LL2

Keuffel & Esser 68 - 1434 Log Log Duplex Vector

4273

Generic slide rule of Engine divided celluloid laminated mahogany, 313x41x7 mm (1962, 1967)
Front Scales: Sh1 Sh2 Th A = B T SRT S = D DI LL01 LL1, Back Scales: LL02 LL03 DF = CF CIF CI C = D LL3 LL2

Keuffel & Esser 68 - 1565 GP-12

4475

Generic slide rule of Ivorite Precison Molded ABS, 317x45.5x4.5 mm (pat. 1964, 1966, 1967, 1972)
Front Scales: Sq1 Sq2 DF = CF T SRT S CI C = D A K
Back Scales: D = 25cm 10inch = L

Keuffel & Esser 68 - 1617 Polyphase

4119

Generic slide rule of Engine divided celluloid laminated mahogany, 277x36x8 mm (1962, 1967)
Front Scales: 10inch / A = B CI C = D K \ 25cm
Back Scales: = S L T =

Keuffel & Esser 68 - 1775 Merchants'

4345

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser 68 - 1892 K-12 Prep

4445

Generic slide rule of Vinylite laminations, Heat stamped, 311.5x41.5x3.2 mm (1966, 1972)
Front Scales: K A = B S CI T C = D L

Keuffel & Esser 68 1400 Analon (B..)

4474

Generic slide rule of Ivorite Precison Molded ABS, 317x45.5x4.5 mm (1967)
Front Scales: V2 V1/2 A = B U1/2 U-1 U C = D V V-1

Keuffel & Esser American 1

4630

Generic slide rule of wood/plastic

Keuffel & Esser American Mannheim

4584

Generic slide rule of engine divided celluloid laminated blond hardwood, with printed inch and cm rules.

Keuffel & Esser Brick-O-Meter

5660

Log/tech slide rule

Keuffel & Esser Construction

3960

Log/tech slide rule

Keuffel & Esser Deci - Lon Instruction Rule

3842

Slide rule

Keuffel & Esser Military (Picture page 2, case)

4750

Slide rule

Keuffel & Esser Mystery rule

5812

Generic slide rule

Keuffel & Esser N < 4041 > dated 1909 (needs checking)

5809

Generic slide rule

Keuffel & Esser N < 4041 > Mannheim Adjustable

4070

Generic slide rule of Engine divided celluloid laminated mahogany, 270x34.5x4.5 mm (1925, 1927, 1930)
Front Scales: 10inch / A = B C = D ] 25cm
Back Scales: = S L T =

Keuffel & Esser N < 4041 > Mannheim, dated 1924

4055

Slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser N < 4053 - 2 > S Polyphase Mannheim Adjustable, dated 1925

4104

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser N < 4053 - 3F > Mannheim Adjustable dated 1923

4704

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser N < 4053 - 3F > Polyphase Mannheim Adjustable, dated 1925, 1927, 1928, 1930

4126

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser N < 4053 - 5 > Polyphase Mannheim Adjustable Dated 1923

4686

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser N < 4053 - 5 > Polyphase Mannheim Adjustable Dated 1923

4696

Generic slide rule

Keuffel & Esser N < 4053- 2 > Mannheim Adjustable, dated 1924

4103

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser N < 4053- 2 > Mannheim Adjustable, dated 1924 (other example)

4753

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser N < 4100 > Stadia

4386

Slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser N < 4102 > Surveyor's Duplex

4403

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser N < 4123 > Roylance

3640

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser N < 4133 > S Roylance Electrical, CI scale added

4517

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser N 4012 Thacher's Calculating Instrument

4006

Generic cylinder of wood/plastic

Keuffel & Esser N 4053 - 3

4726

Generic slide rule

Keuffel & Esser N 4053 - 5 Polyphase Mannheim Adjustable, with molded plastic back

4138

Generic slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser N 4081 - 3 Log Log Decitrig Duplex

4239

Generic slide rule of Engine divided celluloid laminated mahogany, 317x41x6 mm (1949)
Front Scales: LL01 K A = B T ST S = D L LL1
Back Scales: LL02 LL03 DF = CF CIF CI C = D LL3 LL2

Keuffel & Esser N 4092 - 3 Log Log Duplex

4328

Slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser N 9081 - 3 Doric Plastic Slide Rule, decitrig scales, all black markings. replaced by N4181-3, 1952

4241

Generic slide rule of Engine Divided White Xylonite, 317.5x41x4.6 mm (1949,1952)
Front Scales: LL01 K A = B T ST S = D L LL1
Back Scales: LL02 LL03 DF = CF CIF CI C = D LL3 LL2

Keuffel & Esser National Union Radio Tubes

4628

Electrical slide rule

Keuffel & Esser NoNumber

4578

Generic slide rule

Keuffel & Esser Percent of accuracy of estimate

4638

Log/tech slide rule

Keuffel & Esser Polyphase Mannheim Adjustable, no model number shown, marked only "K+E"

4548

Generic slide rule of Engine divided celluloid laminated mahogany, slide is 1/4 inch overlength on the right

Keuffel & Esser Reymond Leather Calculator

4637

Log/tech slide rule

Keuffel & Esser Syrup Rule

4635

Technical slide rule of plastic

Keuffel & Esser U.S. Militairy Short Base Triangulation Model

4096

Military slide rule of Engine divided celluloid laminated mahogany

Keuffel & Esser Unknown 4041 Mannheim, dated 1902

4659

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser Unknown 4041 Mannheim, dated 1902

4660

Generic slide rule of engine divided celluloid laminated mahogany

Keuffel & Esser Unknown number Made by Tavernier Gravet, dated 1883

4728

Generic slide rule of polished boxwood