Italy and Spain
Slide Rule Gallery

(Manufacturers not found in their own gallery)
This gallery is dedicated slide rules made or distributes in Italy or Spain and displays specimins, in the most part, contributed by the generosity of the Giovanni Breda Collection in Italy.
KEEP ISRM FREE!

Manufacturers/Brands Represented in this gallery:
Artma, Azzola, Cal-Co, Cellograf, Ferraro-Savona / W.Sabatini, La Filotecnica Salmoiraghi,
Hono-Rietz, Marcantoni, Mathematicus, Neolt, Orions, Teacher, Tecnostyl, Vittorio Martini, Zulaica - Spain


ARTMA Pubblicita, Como, Italy



REF Artma Mannheim Pocket

Mannheim Pocket
Made in Italy
Front Scale (extended scales in red)
K, A [ B, CI, C ] D, L
Back Slide: Blank
Back Advertisement: Casa Di Risparmio Di Roma
Note: Plastic stock and cursor.
Virtual Donation of the Giovanni Breda Collection, Italy

F. Azzola & C., Bergamo, Italy



REF Azzola No. 12.5R

Azzola No. 12.5R
Made in Italy
Front Scale (extended scales in red)
14cm // K, A [ B, CI, C ] D, L
Back Scale
[ S, S&T, T ]
Note: Plastic cursor, riveted laminations on wood stock.
Virtual Donation of the Giovanni Breda Collection, Italy

Cal-Co, Italy

Company name possibly derived from regolo CALCOlatore, Italian for slide rule.


Cal-Co Patent Circular Slide Rule

ISRM 13.08.11.01


Photos of Francis Donchi, with European Ford Capri, and with grandson Nicolai Donchi, la Brianza, Italy.
Cal-Co Patent Circular Slide Rule
Made in Italy. Outer stator disk is 6.5 cm [2.6 inch], inner disk is 5.5 cm.
Country of origin based on 'SIN' being printed as 'SEN'
and metric HP conversion gauge mark of '736'.
Note: Appears to be painted/silkcreen on aluminum disks with brass hub. c1940
Front Scales
C ( D, A, K )
Back Scales
L, SEN 1, SEN 2, TG
Note: Concentric Sine scales
Donated by Nicolai Donchi, Monza, Italy in memory of his Grandfather Francis Donchi.
This artifact was found in the house of his Grandparents. and was owned by his Grandfather. Francis Donchi (1917-1993). Born in August 17, 1917 in Paina Brianza in Lombardy (Italy) where he finished elementary school and for the next 7 years, helped his father, Francesco, in the fields. At 18 he started working in a textile company on the banks of the River Lambro (Monza river) living modestly. At age 22 he was drafted into the Italian Army where he served with honor for 4 years from 1939 to 1943. After WWII he met his wife, who was a girl from his own village. Francis received a 'gratitude of war' after a few years for a lung disease due to breathing the toxic smoke created by the war industries. Though partially invalid he began a quiet life in Carate Brianza (Lombardy) and to have a child that carries on the family name. Francis had a second job restoring furniture in his house, which had many tools of the trade and where this slide rule was discovered after his death at age 76.

Cellograf, Milano, Italy



REF Cellograf Pocket Mannheim
Cellograf Pocket Mannheim
Made in Italy
Front Scale (extended scales in red)
14cm // K, A [ B, CI, C ] D, L
Back Scale
[ S, S&T, T ]
Note: Plastic cursor, riveted laminations on wood stock.
Virtual Donation of the Giovanni Breda Collection, Italy

Faviani



REF Faviani Calcolina Slide Rule
Faviani Calcolina Slide Rule
Made in Italy
Front Scale
A ( B )
Back: Useful Geometric Formulae, Unit Conversions
Scan donated by Andrea Celli collection (Italy)

Ferrero-Savona



REF C.A. Ferrero-Savona Model FER H-39
Concrete Calculator (Washington Sabatini Version 3)

Label

Case
C.A. Ferrero-Savona Model FER H-39 concrete calculator (Ver 3)
Made in Savona, Italy. Based on the original design by Washington Sabatini (1923-1966).
Patents: FR834247, FR672500, DE547229, GB331819, US1898398, AT111963B, DE459786, GB265752, DE459786, IT236298, IT272159, IT354168

Description: The straight edge constitutes the quadrant formed by eight sliders ring, each representing a variable of calculation formulas, and by an outer ring fixed, showing a scale of weight values in kilograms. On each slide are marked with the indices of the possible values of variable. The crank handle as slides through eight buttons placed along the arm. Raising a button, the corresponding ring remains stationary.

The first (1930) model had two series of concentric sliding rings. It was based on Patent:DE459786 and it was produced directly by W. Sabatini. In the second (1939) model all rings became concentric. It was based on Patent:DE547229 and it was also produced directly by W. Sabatini. Third model (Fer H-39) is shown in this image. Basically it is a compact restyling of second model and it was produced by Ferrero brothers, who acquired Sabatini patents. The original Sabatini device is in the Milano Science Museum.

Washington Sabatini Concrete Calculator Version 1, 1930

Washington Sabatini Concrete Calculator Version 2, 1939


Filotecnica Salmoiraghi, Milano, Italy



REF Filotecnica Salmoiraghi 10AB
Filotecnica Salmoiraghi 10AB
Made in Italy
Front Scale
10cm // A [ B, C ] D
Back Scale: Unknown
Back: Unknown
Note: Railroad track divisions, formed sheet plastic cursor
Scan Donated by Andrea Celli Collection, Italy


REF Filotecnica Salmoiraghi R52
Filotecnica Salmoiraghi R52
Made in Italy
Front Scale (extended scales in red)
27.5cm // K, A [ B, CI, C ] D, L
Back Scale
[ S, S&T, T ]
Back: Equivalents in Italian
Note: Railroad track divisions, Metal and Glass cursor, riveted laminations on wood stock.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Filotecnica Salmoiraghi No. 754 Aerofoto
Filotecnica Salmoiraghi No. 754 Aerofoto
Made in Italy - Regolo per Rilievi Aerofotografici, Mod. Giovine - Diritti reg". Gennoio 1924
Front Scale (extended scales in red)
12.5cm // Formulae (focal distance, velocity, etc), A [ B, CI, C ] D, L
Back Scale
[ S, S&T, T ]
Back: Symbol (Symboli) definitions
Note: Railroad track divisions, Metal and Glass cursor, riveted laminations on wood stock.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Filotecnica Salmoiraghi Projection Slide Rule
Filotecnica Salmoiraghi Projection Slide Rule
Made in Italy - Serial Number 45576
Front Scale
Sen, Tan, 1/X, N, N [ N2, N3, Log N, archi ]
Note: Display manipulated by top dials, Two drums split between the two 'N's.
Photos Donated by Andrea Celli Collection, Italy



Goliardo



REF Goliardo Pocket Slide Rule
Goliardo Pocket Slide Rule
Made in Italy
Front Scale
A [ B, C ] D
Back Unknown
Scan donated by Andrea Celli collection (Italy)

Hono-Rietz



REF Hono-Rietz Jap.125
Hono-Rietz Jap.125 - Closed simplex
Possibly made in France by Graphoplex - Sold in Italy
(compare cursor design and unconventional scale labels)
Front Scale
13cm // B3(K), S, B2(A) [ b2(B), a(CI), b(C) ] B(D), T, L
Back TBD
Archive - Scarpaz collection (Italy)


REF Hono-Rietz Jap.125
Hono-Rietz Jap.125 - Closed simplex
Possibly made in France by Graphoplex - Sold in Italy
(compare cursor design and unconventional scale labels)
Front Scale
13cm // B3(K), S, B2(A) [ b2(B), a(CI), b(C) ] B(D), T, L
Back Adv: Dalmar S.p.a. - Italian hydraulic hose/gasket manufacturer
Archive - G. Breda collection (Italy)


Hono-Rietz 300 No1 (promo TRIULZ)
Hono-Rietz 300 No1 (promo TRIULZ)
Possibly made in France by Graphoplex - Sold in Italy
Front Scale[extended]
L, K, A [ B, CI, C ] S, S, ST, T
Back Adv: Blank
Gift Of Edward H. Wright, Odenton, Maryland

Marcantoni



REF Marcantoni No.15R Rietz
Marcantoni No.15R Rietz
Made in Italy
Front Scale (extended scales in red)
15cm // K, A [ B, CI, C ] D, L
Back Scale: [ S, S&T, T ]
Note: Early riveted laminated wood stock, railroad track divisions, ( metal and mulit-lined glass cursor is missing).
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.25 (Early) Rietz
Marcantoni No.25 (Early) Rietz
Made in Italy. Marking S.110
Front Scale (extended scales in red)
27cm // K, A [ B, CI C ] D, L
Back Scale: 5in [ S, S&T, T ]
Back: Equivalents and Conversion factors
Note: Early riveted laminated wood stock, railroad track divisions, metal and multi-lined glass cursor.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.10AB Pocket Mannheim
Marcantoni No.10AB Pocket Mannheim
Made in Italy
Front Scale (extended scales in red)
11cm // A [ B, CI, C ] D
Back Scale: Blank
Note: Plastic magnifying cursor.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.10NB Pocket Rietz
Marcantoni No.10NB Pocket Rietz
Made in Italy
Front Scale (extended scales in red)
11cm // A [ B, CI, C ] D
Back Scale: [ S, L, T ]
Back Advertiser: BINI - Officine Augusto, Rovereto
Note: Plastic magnifying cursor.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.10NB Pocket Rietz
Marcantoni No.10NB Pocket Rietz
Made in Italy
Front Scale (extended scales in red)
11cm // A [ B, CI, C ] D
Back Scale: [ S, L, T ]
Note: Plastic magnifying cursor.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.12.5AB (Early) Pocket Mannheim
Marcantoni No.12.5AB (Early) Pocket Mannheim
Made in Italy
Front Scale (extended scales in red)
14cm // A [ B, C ] D
Back Scale: Blank
Back Advertiser: Siderurgica Commerciale
Note: Plastic stock and cursor.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.12.5AB Pocket Mannheim
Marcantoni No.12.5AB Pocket Mannheim
Made in Italy
Front Scale (extended scales)
14cm // A [ B, C ] D
Back Scale: Blank
Back Advertiser: F.A.C.E. - Milano
Note: Plastic stock and cursor.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.12.5C Special
Marcantoni No.12.5C Special
Made in Italy
Front Scale (extended scales in red)
14cm // Special, A [ B, CI, Special ] D, L
Back Scale: [ Special (3 scales) ]
Note: Plastic magnifying cursor.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.25CA Concrete Calculator
Marcantoni No.25CA Concrete Calculator
Made in Italy
Front Scale (extended scales in red)
27cm // A [ B, x, Mass formulae, h, sF, x, h, sF, C ] D, L
Back Slide: [ B, x, h, sF, C ]
Back Table: (weight) PESO Kg/mil. by mm diameter
Cursor: Multi-hairlined glass lens, metal frame
Back Advertiser: A.L.A. - PESCARA, Concessionarie LATERIZI R.D.B.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.12,5CA Concrete Calculator
Marcantoni No.12,5CA Concrete Calculator
Made in Italy
Front Scale (extended scales in red)
14cm // A [ B, x, Mass formulae, h, sF, x, h, sF, C ] D, L
Back Slide: [ B, x, h, sF, C ]
Back Table: (weight) PESO Kg/mil. by mm diameter
Cursor: Multi-hairlined glass lens, metal frame
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.12,5CA Concrete Calculator
Marcantoni No.12,5CA Concrete Calculator
Made in Italy
Front Scale (extended scales in red)
14cm // A [ B, x, Mass formulae, h, sF, x, h, sF, C ] D, L
Back Slide: [ B, x, h, sF, C ]
Back Table: (weight) PESO Kg/mil. by mm diameter
Cursor: Multi-hairlined glass lens, metal frame
Back Advertisement: A.L.A. - Pescara, Concessionarie Brevetti R.D.B.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.12,5 NB Pocket Rietz
Marcantoni No.12,5 NB Pocket Rietz
Made in Italy
Front Scale (extended scales in red)
11cm // A [ B, C ] D
Back Scale: [ S, L, T ]
Note: Early design, Folded sheet plastic cursor, Railroad track divisions
Back Advertisement: FIAP - Fabbrica Italiana Apparecchi Pneumatici, Torino, Italy.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.12,5 NB Pocket Rietz
Marcantoni No.12,5 NB Pocket Rietz
Made in Italy
Front Scale (extended scales in red)
14cm // A [ B, C ] D
Back Scale: 5in [ S, L, T ]
Note: Molded Magnifying cursor
Back Advertisement: Rossbeton - Fabbrica Macchine Edili E Stradali, Busalla - Genova, Italy.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.12,5 RB (Early) Pocket Rietz
Marcantoni No.12,5 RB (Early) Pocket Rietz
Made in Italy
Front Scale (extended scales in red)
14cm // K, A [ B, CI, C ] D, L
Back Scale: [ S, S&T, T ]
Note: Early design, Folded sheet plastic cursor, Railroad track divisions
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.12,5 RB Pocket Rietz
Marcantoni No.12,5 RB Pocket Rietz
Made in Italy
Front Scale (extended scales in red)
14cm // K, A [ B, CI, C ] D, L
Back Scale: 5in [ S, S&T, T ]
Note: Metal frame, multi-hairlines, glass cursor
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.12,5 RE Pocket Elettro (Electro)
Marcantoni No.12,5 RE Pocket Elettro (Electro)
Made in Italy
Front Scale (extended scales in red)
14cm // Cosφ, A(KW) [ B(CV), CI, C ] D, Cosφ
Well: Dynamo, Motor, V
Back Scale: 5in [ L, T ]
Note: Multi-hairline, plastic cursor
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.12,5 RM Pocket Rietz
Marcantoni No.12,5 RM Pocket Rietz
Made in Italy
Front Scale (extended scales in red)
14cm // K, A [ B, CI, C ] D, L
Back Scale: 5in [ S, S&T, T ]
Back Advertisement: FIBRONIT - Soc. Cementifera Italiana Casale M.
Note: Folded sheet plastic cursor
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.25R Rietz
Marcantoni No.25 Rietz
Made in Italy.
Front Scale (extended scales in red)
27cm // K, A [ B, CI C ] D, L
Back Scale: [ S, S&T, T ]
Back: Equivalents and Conversion factors
Note: Plastic stock, Metal and multi-lined glass cursor.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Marcantoni No.25RE Electro-Rietz

ISRM 13.02.20.01
Marcantoni 25RE Electro-Rietz
Made in Italy by Marcantoni, Milano, Italy.
Front Scale (extended scales in red)
27cm // P, K, A (CV) [ B (KW), CI C (DYN)] D(DYN), V, U || 10.5inch
Back Scale: [ S, S&T Cos&Cot, T ]
Back: Equivalents and Conversion factors (Italian)
Back Advertising: Telonic Italia S.p.A., Milano via Amedeo D'Aosta 11
Note: Plastic stock, Metal and multi-lined glass cursor.

Mathematicus



REF Mathematicus Pocket Mannheim
Mathematicus Pocket Mannheim
Made in Italy
Front Scale (extended scales in red)
12.5cm // K, A [ B, CI, C ] D
Back Scale: [S, S&T, T ]
Note: Railroad Track Divisions, Laminated wood, Plastic cursor.
Virtual Donation of the Giovanni Breda Collection, Italy

Microcalcolatore



REF Microcalcolatore Tipo
Microcalcolatore Tipo
Made in Italy
This is a very unique slide rule application in the shape of a cigar lighter, with an internal scale in the case, viewed using a small magnifying port.
Photo donated by Andrea Celli Collection Italy

Neolt factory

Via G.Galilei, 8, 24036 Ponte S. Pietro Bergamo, Italy


REF Neolt Rietz 25
Neolt Rietz 25
Made in Bergamo, Italy
Front Scale
27cm // K, A[ B, CI, C ] D, L
Back Slider: [ S, S&T, T ]
Cursor: multiple hairlines
Archive Herman van Herwijnen's Slide Rule Catalogue


REF Neolt TS 10
Neolt TS 10
Made in Italy
Front Scale
10cm // A[ B, C ] D
Archive Herman van Herwijnen's Slide Rule Catalogue


REF Neolt TSL 10 Rietz
Neolt TSL 10 Rietz
Made in Bergamo, Italy
Front Scale (extended scales)
10cm // A [ B, CI, C ] D
Back Scale: [S, L, T ]
Back Advertising: L. Aussiello - Roma, Estintori Ed Impianti Antincendio.
Note: Plastic stock, Plastic cursor.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Neolt TR 12.5 Rietz
Neolt TR 12.5 Rietz
Made in Bergamo, Italy
Front Scale (extended scales in red)
14cm // K, A [ B, CI, C ] D, L
Back Scale: [S, S&T, T ]
Back Advertising: FIAT - Stabilimento Grandi Motori.
Note: Plastic stock, Metal and Plastic cursor.
Virtual Donation of the Giovanni Breda Collection, Italy

Orions



REF Orions Pocket Mannheim
Orions Pocket Mannheim
Made in Italy
Front Scale (extended scales in red)
A [ B, CI, C ] D, K
Back Scale: Blank
Note: Plastic stock, Plastic cursor.
Virtual Donation of the Giovanni Breda Collection, Italy

Plastigraf, Como, Italy



REF Neolt TR 12.5 Rietz
Neolt TR 12.5 Rietz
Made in Italy
Front Scale (extended scales in red)
14cm // K, A [ B, CI, C ] D, L
Back Scale: [S, S&T, T ]
Back Advertising: FIAT - Stabilimento Grandi Motori.
Note: Plastic stock, Metal and Plastic cursor.
Virtual Donation of the Giovanni Breda Collection, Italy


REF Neolt TR 12.5 Rietz
Neolt TR 12.5 Rietz
Made in Italy
Front Scale (extended scales in red)
14cm // K, A [ B, CI, C ] D, L
Back Scale: [S, S&T, T ]
Back Advertising: FIAT - Stabilimento Grandi Motori.
Note: Plastic stock, Metal and Plastic cursor.
Virtual Donation of the Giovanni Breda Collection, Italy

Teacher



REF Teacher Mannheim
Teacher Mannheim
Made in Italy
Front Scale (extended scales in red)
K, A [ B, CI, C ] D
Back Slide: [ cm, in ]
Note: Unique construction
Virtual Donation of the Giovanni Breda Collection, Italy

Tecnostyl



ISRM Tecnostyl 40/R Rietz (early)
Tecnostyl 40/R Rietz (early)
Made in Italy
Front Scale
27cm // K, A [ B, CI, C ] D, L
Back Scale (Slide): [S, S&T, T ]
Cursor: 3 hairlines
Donated by David Hecht, Alexandra, VA


REF Tecnostyl 40/R Rietz (clear plastic)
Tecnostyl 40/R Rietz (clear plastic)
Made in Italy
Front Scale
27cm // K, A [ B, CI, C ] D, L
Back Scale (Slide): [S, ST, T ]
Cursor: 3 hairlines
Archive - Herman van Herwijnen's SR Catalogue


REF Tecnostyl 41/C
Tecnostyl 41/C
Made in Italy
Front Scale
14cm // A [ B, %, h, st, C ] D
Back Scale (Slide): [S, ST, T ]
Cursor: 3 hairlines
Archive - Herman van Herwijnen's SR Catalogue


REF Tecnostyl 41/C4 - Log Electrical tech
Tecnostyl 41/C4 - Log Electrical tech
Made in Italy
Front Scale
14cm // A [ B, %, h, st,%, st, h, st, C ] D
Back Scale (Slide): [ B, %, h, st,%, st, h, st, C ]
Back: Wire gage table
Cursor: 3 hairlines
Archive - Herman van Herwijnen's SR Catalogue


REF Tecnostyl 41/D
Tecnostyl 41/D
Made in Italy
Front Scale
14cm // P, K, A [ B, CI, C ] D, tg, sen
Back Scale (Slide): [LL1, LL2, LL3 ] 5.5 in
Cursor: 3 hairlines
Archive - Herman van Herwijnen's SR Catalogue


REF Tecnostyl 41/E Electro
Tecnostyl 41/E Electro
Made in Italy
Front Scale
14cm // cosa, A(KW) [ B (PS), CI, C ] D, cosa
Back Scale (Slide): [S, lg, T ]
Cursor: 3 hairlines
Archive - Herman van Herwijnen's Slide Rule Catalogue


Tecnostyl 41/R
ISRM 12.06.24.32
Tecnostyl 41/R
Made in Italy
Front Scale
14cm // K, A [ B, CI, C ] D, L
Back Scale (Slide): [ S, S&T, T ]
Cursor: 3 hairlines
Donated by the Huang Collection.
The collector, who prefers to remain anonymous, obtained a B.S. degree in Physics from Taiwan's National Tsing Hua University in 1971. His love for computation has encouraged him to build a collection of slide rules, HP and TI calculators, as well as abaci, many displayed at ISRM.


REF Tecnostyl ST41
Tecnostyl ST41
Made in Italy
Front Scale
14cm // K, A [ B, CI, C ] D, L
Back Scale (Slide): [ S, S&T, T ]
Archive - Herman van Herwijnen's SR Catalogue


REF Tecnostyl Calcolator Gegolo da Tavolo
Tecnostyl Calcolator Gegolo da Tavolo
Made in Italy - 160mm diameter
Front Scale: A ( B )
Archive - Herman van Herwijnen's SR Catalogue


REF Tecnostyl Calcolator
Tecnostyl Calcolator
Made in Italy - 160mm diameter
Front Scale: A ( B )
Archive - Herman van Herwijnen's SR Catalogue


REF Tecnostyl Regolo Per Trigonometria
Tecnostyl Regolo Per Trigonometria
Made in Italy
Front Scale
Slide Chart for claculating right triangles
Back Scale: 12cm
Archive - Herman van Herwijnen's SR Catalogue

Vittorio Martini

In 1866 the Cavalier Vittorio Martini founded the Antica Fabbrica (Very Old Factory) Vittorio Martini, "Workshop specializes in the production of instruments of high precision technical design, computing and engineering."


REF Vittorio Martini Rietz 400 Export
Vittorio Martini Rietz 400 Export
Made in Italy
Front Scale (extended scales)
14cm // K, A [ B, CI, C ] D, L \\ 5in.
Back Scale
[ S, S&T, T ]
Note: Metal and glass cursor
Virtual Donation of the Giovanni Breda Collection, Italy


REF Vittorio Martini 401 Elettro
Vittorio Martini 401 Elettro
Made in Italy - Manufacturing code 32
Front Scale (extended scales)
14cm // V, A(PS) [ B(KW), CI, C ] D, U \\ 5.5in
Back Scale
[ S, L, T ]
Virtual Donation of the Giovanni Breda Collection, Italy


REF Vittorio Martini 402 Elettro
Vittorio Martini 402 Elettro
Made in Italy - Manufacturing code 83, 37
Front Scale (extended scales)
14cm // V , A(PS) [ B(KW), CI, C ] D, Cosφ \\ 5in
Back Scale
[ S, L, T ]
Virtual Donation of the Giovanni Breda Collection, Italy


REF Vittorio Martini 402 Elettro V2
Vittorio Martini 402 Elettro V2
Made in Italy - Manufacturing code 83, 37
Front Scale (extended scales)
14cm // V , A(PS) [ B(KW), CI, C ] D, Cosφ \\ 5in
Back Scale
[ S, L, T ]
Virtual Donation of the Giovanni Breda Collection, Italy


REF Vittorio Martini 416 Elettro (Electro)
Vittorio Martini 416 Elettro (Electro)
Made in Italy - Manufacturing code 83, 37
Front Scale (extended scales)
26cm // Volt , A(PS) [ B(KW), CI, C ] D, Cosφ, K, LL
Back Scale
[ S, S&T, T ]
Virtual Donation of the Giovanni Breda Collection, Italy


REF Vittorio Martini 411 Rietz Extra
Vittorio Martini 411 Rietz Extra
Made in Italy
Front Scale (extended scales)
26cm // K, A [ B, CI, C ] D, L \\ 10in
Back Scale
[ S, ST, T ]
Virtual Donation of the Giovanni Breda Collection, Italy


REF Vittorio Martini Rietz 25cm
Vittorio Martini Rietz 25cm
Made in Italy, Manufacturing Code 34, 11, 38
Front Scale (extended scales)
26cm // K, A [ B, CI, C ] D, L \\ 10in
Back Scale
[ S, ST, T ]
Back Advertising: Cementerie Del Tirreno, S.p.A
Virtual Donation of the Giovanni Breda Collection, Italy


REF Vittorio Martini 417 Darmstadt
Vittorio Martini 417 Darmstadt
Made in Italy
Front Scale (extended scales)
26cm // K, A [ B, CI, C ] D, Cos, sin Cos, tg Cot
Back Scale
[ LL1, LL2, LL3 ]
Virtual Donation of the Giovanni Breda Collection, Italy


REF Vittorio Martini 404 Darmstadt
Vittorio Martini 404 Darmstadt
Made in Italy
Front Scale (extended scales)
14cm // P, K, A [ B, CI, C ] D, sin Cos, tg Cot, Lgx
Back Scale
[ LL1, LL2, LL3 ]
Note: This version has a cursor made of plastic
Virtual Donation of the Giovanni Breda Collection, Italy


REF Vittorio Martini 404 Darmstadt V2
Vittorio Martini 404 Darmstadt V2
Made in Italy
Front Scale (extended scales)
14cm // P, K, A [ B, CI, C ] D, sin Cos, tg Cot, Lgx
Back Scale
[ LL1, LL2, LL3 ]
Note: This version has a cursor made of metal and glass
Virtual Donation of the Giovanni Breda Collection, Italy


REF Vittorio Martini Rietz 3991
Vittorio Martini Rietz 3991
Made in Italy, Manufacturing code 75,37
Front Scale (extended scales in yellow)
14cm // K, A [ B, CI, C ] D, L \\ 5in.
Back Scale
[ S, S&T, T ]
Note: Plastic cursor
Virtual Donation of the Giovanni Breda Collection, Italy


REF Vittorio Martini Rietz 3991 V2
Vittorio Martini Rietz 3991 V2
Made in Italy, Manufacturing code 75,37
Front Scale (extended scales in red)
14cm // K, A [ B, CI, C ] D, L \\ 5in.
Back Scale
[ S, S&T, T ]
Note: Plastic cursor
Virtual Donation of the Giovanni Breda Collection, Italy


REF Vittorio Martini Rietz Standard
Vittorio Martini Rietz Standard
Made in Italy, Manufacturing code 75,37
Front Scale (extended scales in red)
14cm // K, A [ B, CI, C ] D, L \\ 5in.
Back Scale
[ S, S&T, T ]
Note: Plastic cursor
Back Advertising: Liberia Dott. A. Fallarino, Benevento.
Virtual Donation of the Giovanni Breda Collection, Italy

Zulaica y Cia



REF Zulaica Stilus
Zulaica Stilus (c1930)
Made in Spain by Zulaica y Cia S.R.C., Zarauz, Guipuzcoa, Basque region
Front Scale
A [ B, CI, C ] D
Back
Equivalents and constants
Archive - Herman van Herwijnen's SR Catalogue

Copyright © 2003-2012 International Slide Rule Museum