Italy and Spain
Slide Rule Gallery
(Manufacturers not found in their own gallery)

KEEP ISRM FREE!
Donations are
tax deductable

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.

Manufacturers/Brands Represented in this gallery:
Artma, Azzola, Cal-Co, Cellograf, Ferraro-Savona / W.Sabatini, La Filotecnica Salmoiraghi,
Hono-Rietz, Marcantoni, Mathematicus, Mattei, 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

Hono-Rietz Jap.125 ISRM 20.04.01.420	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 Gift of Philip Stanley Collection,
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) ISRM 14.10.09.11	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 T. Wright, Odenton, Maryland

Marcantoni


Marcantoni No.15R Rietz ISRM 22.03.01.60	Marcantoni No.15R Rietz Made in Italy Front Scale (extended scales in red) 15cm // K, A [ B, CI, C ] D, L \|\| 1:25 0-4 Back Scale: [ S, S&T, T ] Note: Early riveted laminated wood stock, railroad track divisions, metal-framed mulit-lined glass cursor. Gift of Philip E. Stanley, Worcester, Mass.
Marcantoni No.25 (Early) RietzREF	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
Marcantoni Compressed Air Tool Pressure Calculator ISRM 22.03.01.69	Marcantoni Compressed Air Tool Pressure Calculator Made in Italy Front Scale (extended scales in red) 14cm // Q(m³/min) [K, H(m), Pa (Kg/cm²) ] ΔPa (Kg/cm²) Back Scale: [ L(m), d ] Back: Quivalents (Italian and English) Back Promo: Mattei Note: Multi-hairline, plastic cursor Gift of Philip E. Stanley, Worcester, Mass.
Marcantoni No.10AB Pocket Mannheim REF	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
Marcantoni No.10NB Pocket Rietz REF	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
Marcantoni No.10NB Pocket Rietz REF	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
Marcantoni No.12.5AB (Early) Pocket Mannheim REF	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
Marcantoni No.12.5AB Pocket Mannheim REF	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
Marcantoni No.12.5C Special REF	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
Marcantoni No.25CA Concrete Calculator REF	Marcantoni No.25CA Concrete Calculator Made in Italy Front Scale (extended scales in red) 27cm // A [ B, x, Mass formulae, h, s_F, x, h, s_F, C ] D, L Back Slide: [ B, x, h, s_F, 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
Marcantoni No.12,5CA Concrete Calculator REF	Marcantoni No.12,5CA Concrete Calculator Made in Italy Front Scale (extended scales in red) 14cm // A [ B, x, Mass formulae, h, s_F, x, h, s_F, C ] D, L Back Slide: [ B, x, h, s_F, 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
Marcantoni No.12,5CA Concrete Calculator REF	Marcantoni No.12,5CA Concrete Calculator Made in Italy Front Scale (extended scales in red) 14cm // A [ B, x, Mass formulae, h, s_F, x, h, s_F, C ] D, L Back Slide: [ B, x, h, s_F, 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
Marcantoni No.12,5 NB Pocket Rietz REF	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
Marcantoni No.12,5 NB Pocket Rietz REF	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
Marcantoni No.12,5 RB (Early) Pocket Rietz REF	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
Marcantoni No.12,5 RB Pocket Rietz REF	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
Marcantoni No.12,5 RE Pocket Elettro (Electro) ISRM 22.03.01.57	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 ] Back Promo: Union Carbide Italia S.P.A., Milano - Via Durini 28. Note: Multi-hairline, plastic cursor Gift of Philip E. Stanley, Worcester, Mass.
Marcantoni No.12,5 RM Pocket Rietz REF	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
Marcantoni No.25R Rietz REF	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
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

Mathematicus Pocket Mannheim
REF

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

Mo. Mattei, Italy

Regolo Di Convergenza (Artllery)
ISRM 15.09.27.01

Nicola Marras - Italy. Collector, promotes through exibits and educational courses the memory of old calculating devices and ancient navigation systems. Nicola wants young people to understand that the world as we see now, skyscrapers, highways, atomic power, space exploration and the electronic computer, was possible because of simple tools like slide rules. His main event every year is the exibit at Cagliari festivalScienza. His goal is the construction of a permanent museum of calculus. Nicola Marras's Calcolatoria Website (both in Italian and English).

Regolo Di Convergenza (Artllery)
Made in Italy by Mo. Mattei
Front Scale: 48cm// b [ d , β(1600-3199), β(1600-1) ϒ] b/D \\ 1:25000
Back Slide: [ Sen.ε, Cos.ε, tg.ε, L ]
Back: Instructions (Italian)
Gift of Nicola, Marras.

Microcalcolatore

Microcalcolatore Tipo
REF

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

Neolt Rietz 25 REF	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
Neolt TS 10 REF	Neolt TS 10 Made in Italy Front Scale 10cm // A[ B, C ] D Archive Herman van Herwijnen's Slide Rule Catalogue
Neolt TSL 10 Rietz REF	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
Neolt TR 12.5 Rietz REF	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

Orions Pocket Mannheim
REF

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

Neolt TR 12.5 Rietz REF	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
Neolt TR 12.5 Rietz REF	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

Teacher Mannheim
REF

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


Tecnostyl 40/R Rietz (early) ISRM	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
Tecnostyl 40/R Rietz (clear plastic) REF	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
Tecnostyl 41/C REF	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
Tecnostyl 41/C4 - Log Electrical tech REF	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
Tecnostyl 41/D REF	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
Tecnostyl 41/E Electro REF	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.
Tecnostyl ST41 REF	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
Tecnostyl Calcolator Gegolo da Tavolo REF	Tecnostyl Calcolator Gegolo da Tavolo Made in Italy - 160mm diameter Front Scale: A ( B ) Archive - Herman van Herwijnen's SR Catalogue
Tecnostyl Calcolator REF	Tecnostyl Calcolator Made in Italy - 160mm diameter Front Scale: A ( B ) Archive - Herman van Herwijnen's SR Catalogue
Tecnostyl Regolo Per Trigonometria REF	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."


Vittorio Martini Rietz 400 Export REF	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
Vittorio Martini 401 Elettro REF	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
Vittorio Martini 402 Elettro REF	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
Vittorio Martini 402 Elettro V2 REF	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
Vittorio Martini 416 Elettro (Electro) REF	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
Vittorio Martini 411 Rietz Extra REF	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
Vittorio Martini Rietz 25cm REF	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
Vittorio Martini 417 Darmstadt REF	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
Vittorio Martini 404 Darmstadt REF	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
Vittorio Martini 404 Darmstadt V2 REF	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
Vittorio Martini Rietz 3991 REF	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
Vittorio Martini Rietz 3991 V2 REF	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
Vittorio Martini Rietz Standard REF	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

Zulaica Stilus
REF

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

Italy and Spain Slide Rule Gallery (Manufacturers not found in their own gallery)