France and Belgium
Slide Rule Gallery

This gallery is dedicated to Belgium and French slide rules and manufacturers. (Manufacturers not found in their own gallery)
KEEP ISRM FREE!
Manufacturers/Brands Represented in this gallery:
Appoullot, Besse, Charpentier, Lenoir, Lenoir-Gravet, Logarecta, MARC - UNIS French Standard Slide Rules, Maurice Damien, Tavernier-Gravet.

Note: When you read "Brevet SGG" or "Brevet SGDG" on a French item, this means, in French: "Brevet Sans Garantie Du Gouvernement", translated to English: "Patented without government warranty". ie, if the government does not restrict or warrants the product, than the idea is considered original.

Also visit the French manufacturer Graphoplex Slide Rule Gallery
Another excellent Museum that displays French Slide Rules is photocalcul.com - Gonzalo Martin's website (in French and Spanish). Many images from photocalcul.com are shown in this, and other ISRM galleries.


Appoullot



Appoullot T2 LogZ Spiral Slide Rule (c.1930)

REF
Appoullot T2 LogZ Spiral Slide Rule
Made in France, Invented by Besse, Pharmacien, a (in) Montdidier (France)
14cm diameter
Front Scale: C, L, 3 revolution number scale, special root scales, tangent & sine scales. Scales wrap in a curious artistic way. Outer scales have accessory vernier scales for increased precision.
Note: 3 revolution spiral number scale is about 60 cm long.
Material: 13 cm diameter irregularly shaped enameled aluminum disc, with two transparent celluloid cursors. Fitted leather case.
Archive - Photo courtesy of the Ed Chamberlain Collection



Appoullot T3 LogZ Spiral Slide Rule (c.1930)

REF
Appoullot T3 LogZ Spiral Slide Rule
Made in France, Invented by Besse, Pharmacien, a (in) Montdidier (France)
14cm diameter
Front Scale: C, L, 3 revolution number scale, special root scales, tangent & sine scales. Scales wrap in a curious artistic way. Outer scales have accessory vernier scales for increased precision.
Note: 3 revolution spiral number scale is about 79 cm long.
Material: 20 cm diameter irregularly shaped enameled aluminum discs, with two transparent celluloid cursors. Fitted leather case.
Archive - Photo courtesy of the Ed Chamberlain Collection


Appoullot T4 LogZ Spiral Slide Rule (c.1930)
Need Image
Appoullot T3 LogZ Spiral Slide Rule
Made in France, Invented by L. Appoullot,
Front Scale: C, L, 3 revolution number scale, special root scales, tangent & sine scales. Scales wrap in a curious artistic way. Outer scales have accessory vernier scales for increased precision.
Note: 3 revolution spiral number scale is about 140 cm long.
Material: 30 cm diameter irregularly shaped enameled aluminum discs, with two transparent celluloid cursors..

Besse



Besse Cadran Comparateur (Dial Comparator)
Besse Cadran Comparateur (Dial Comparator)
Made in France, Invented by Besse, Pharmacien, a (in) Montdidier (France)
14cm diameter
Front Scale: Units Conversion of Pharmaceutical weights.
Text on face: Les formalites vouldes par la loi ayant ete remplies, sera regarde comme contrefart tout exemplaire qui ne portera pas la signature de l'Auteur, Besse.
Archive - 2009 Phillip Weiss Auction


Charpentier



Charpentier Calculimetre
Charpentier Calculimetre
Made in France - 5.92cm diameter
Front Scale: D, C ( W1, W2)
Back scale: L, S, T
Archive - Giovanni Breda Collection

Presentation by Gonzola Martin, 2009, France (704KB pdf)

Original Instruction Sheet, French (2.5MB pdf)



Lenoir (1820-1827), Gravet-Lenoir (1827-1867)

also see Tavernier-Gravet (successor to Gravet-Lenoir) (1867-1972)


REF Lenoir SOHO c1825 26cm
Lenoir SOHO c1825 26cm
Made in France - SOHO type scales
Front Scale: A [ B, C ] D
Well: 26-52 CM, 9.5-12.25 Inch
Back of Slide: ?,?,?,L
Back: Conversions, Weights
Archive - Etienne Pommel Collection, France, Courtesy of photocalcul.com
Details


REF Gravet-Lenoir SOHO 1829-1844 25cm
Gravet-Lenoir SOHO 1829-1844 25cm
Made in France - 14 R. Cassette, Paris. SOHO type scales
Front Scale: A [ B, C ] D
Well: 26-52 CM, 9.5-12.25 Inch
Back of Slide: ?,?,?,L
Back: Diviseurs pour, Conversions, Weights
Archive - Etienne Pommel Collection, France, Courtesy of photocalcul.com
Details

Logarecta Déposé



REF Logarecta Déposé - Malta Logarithmic Scales
Logarecta Déposé - Malta Logarithmic Scales
Made in Belgium
Front Scale:

BackScale: Trig scales
Archive - Herman van Herwijnen's SR Catalogue

MARC Slide Rules


With UNIS marks. Union Nationale Inter Syndacale is French organization monitoring the quality of French goods. The "UNIS" marking found on slide rules was more or less equivalent to stating that the product was "Made in France". See more samples of Slide Rules marked with "UNIS" in United States gallery.. These were exported to the USA and rebranded for Guedon. See other rare French slide rules and sectors in the Rarities gallery, and Troncets (Addiators) in the Mechanical Adders gallery.


REF MARC Electro - Spéciale pour Électriciens
MARC Electro - - Spéciale pour Électriciens
Made in France, UNIS marks
Front Scale
13cm // KW, A [ B, C ] D,
Well: DYN MOT
Slide Rule Scan Courtesy of Oliver Cassou Collection, France
1932 MARC Advertisement Courtesy of reglasdecalculo.com


MARC No 5 Électriciens

ISRM 13.06.20.06
MARC No 5 Électriciens
Made in France, UNIS marks
Front Scale
13cm // A (KW) [ B (KW), C (CV)] D (CV)
Well: DYN MOT
Donated by Phillip Rodley, Upper Hutt, New Zealand
Instructions Instructions (PDF)


REF MARC No 6
MARC No 6
Made in France, UNIS marks
Front Scale
13cm // K, A [ B, CI, C ] D, L
Slide: [ S,S&T, T]
Archive - Herman van Herwijnen's SR Catalogue


REF MARC
MARC
Made in France, UNIS marks
Front Scale
13cm // A [ B, C ] D
Archive - Herman van Herwijnen's SR Catalogue


REF MARC Régle
MARC Réglec
Made in France, UNIS marks
Front Scale
13cm // K, A [ B, CI, C ] D, L
Slide: [ S,S&T, T]
Archive - Herman van Herwijnen's SR Catalogue

Maurice Damien 39, Rue des Mathurins, Paris



Maurice Damien Universal Calculation Ruler
(Regle A Calculus)
ISRM 13.02.13.01
Maurice Damien Universal Calculation Ruler (Regle A Calculus)
Made in France - c1930
Front Scale (extended): 27cm // K, A [ B, CI, C ] D, L \\ 10.5inch
Back scale: [ S, S&T, T ]
Multilined Cursor (repaired, does not seem to be the original frame, which should be metal)
Note:28cm long, Extruded Aluminum construction, Railroad Track style divisions, photo printed using 'Photal Process'
Gift of Phillip Rodley of UpperHutt, New Zealand
This slide rule and others in the ISRM archives and galleries were donated through the generosity and support of Phillip Rodley. Phil is very enthusiatic in finding slide rules in New Zealand that are not available to the rest of the world, and gifting them to ISRM. He enjoys the American brands that have leather sleeves and belt loops.


Maurice Damien Universal Ruler (Regle A Calculus)
REF
Maurice Damien Universal Ruler (Regle A Calculus)
Made in France - c1930
Front Scale (extended): 27cm // K, A [ B, CI, C ] D, L \\ 10.5inch
Back scale: [ S, S&T, T ]
Multilined Cursor (repaired, does not seem to be the original frame, which should be metal)
Note:28cm long, Extruded Aluminum construction, Railroad Track style divisions, photo printed using 'Photal Process'
This version has a flat back plate as compared to the one in the ISRM collection.
Scan By Gonzalo Martin Collection, photocalcul.com
Box label


Maurice Damien Regle A Calculus No16
REF
Maurice Damien Regle A Calculus No16
Made in France - c1930
Front Scale (extended): 27cm // K, A [ B, CI, C ] D, L \\ 10.5inch
Back scale: [ S, S&T, T ]
Multilined Cursor (repaired, does not seem to be the original frame, which should be metal)
Note:28cm long, Extruded Aluminum construction, Railroad Track style divisions, photo printed using 'Photal Process'
This version has a stamped back plate similar to the 'Universal' in the ISRM collection.
Scan By Gonzalo Martin Collection, photocalcul.com



Maurice Damien AAF40-4 Aviation Flight Computer
REF
Maurice Damien AAF40-4 Aviation Flight Computer
Made in France - c1930
Front Scale (extended): Distance (Time (Minutes), Time (Hours), Temp Air, Altimeter Correction
Back scale: Course and Wind Drift Correction
Note: Photo printed using 'Photal Process'
Scan By Gonzalo Martin Collection, photocalcul.com


TAVERNIER-GRAVET

Tavernier-Gravet (1867-1972)
Instruments de Mathématiques
Fabrique de Régles a Calul, fondee en 1820
19, Rue Mayet; ci-devant, 39, rue de Babylone, Paris, France
Advertisement courtesy of regladecalculo.com


REF K&E Early Import
K&E Early Import
Made in France for K&E by Tavernier-Gravet
Front Scale
20cm // A [ B, C ] D || 20cm
Back Scale: [ S, L, T ]
Back: Equivalents (conversion factors)
Note: Medaillis d'Or 1878 et 1889 - This means a gold medal for excellence
Archive: Herman van Herwijnen SRC


Tavernier-Gravet
Tavernier-Gravet - c1900
Made in France- Rue Mayet 19, Paris
Front Scale
25cm // A, DF [ CF, CI, C ] D \\ 25cm
Back Scale (Slide): [S, L, T ]
Cursor: Brass Chisel Point
Archive - Rod Lovett Collection


REF Tavernier-Gravet Chisel Cursor Mannheim
Tavernier-Gravet Chisel Cursor Mannheim- c1900
Made in France - Rue Mayet 19, Paris
Front Scale
25cm // A [ B, C ] D
Back Scale (Slide): [S, L, T ]
Back: Equivalents (French)
Scan Courtesy of Tom Dilatush Collection




Tavernier-Gravet c1910

ISRM 14.09.25.03
Tavernier-Gravet - c1910
Made in France - Rue Mayet 19, Paris
Material: Pearwood
Front Scale: 25cm // A, [ B, C ] D || 25cm
Well: 28-53.6cm
Back Scale (Slide): [S, L, T ]
Cursor: Cast Brass frame with glass lens with hairline
Back: Equivalents in French
Note: Has 48 π on end of stock and slide. These are either lot codes and/or maker marks.
Original owner: H.M.J. scrathed on cursor and on cardboard sleeve.
Gift of Phillip Rodley, Upper Hutt, New Zealand
Phillip Rodley


REF Tavernier-Gravet Beghin Model Depose 10-3
Tavernier-Gravet Beghin Model Depose 10-3
Made in France
Front Scale (unmarked)
27cm // A, DF [ CF, CI, C ] D, K || L
Back Slider
[ S, T, B ]
Back: Equivalents and Conversion factors
Note: Early riveted laminated wood stock, railroad track divisions, Metal framed multi-hairline glass cursor.
Scan Courtesy of Giovanni Brenda Collection, Italy


REF Tavernier-Gravet Beghin
Tavernier-Gravet Beghin - c1920
Made in France - Rue Mayet 19, Paris
Front Scale
25cm // A, DF [ CF, CI, C ] D, K, L
Back Scale (Slide): [S, T, B ]
Cursor: 3 hairlines
Scan Courtesy of Giovanni Breda Collection


REF Tavernier-Gravet Mannheim
Tavernier-Gravet Mannheim - dc8-28 (Aug 1928)
Made in France - Rue Mayet 19, Paris
Front Scale
25cm // A [ B, C ] D
Back Scale (Slide): [S, L, T (inverted) ]
Back: Equivalents (French)
Scan Courtesy of Tom Dilatush Collection


REF Tavernier-Gravet Plastic
Tavernier-Gravet Plastic - c1950
Made in Paris, France
Front Scale (extended)
25cm // A [ B, CI, C ] D
Back Scale (Slide): [S, S&T, T ]
Scan Courtesy of Tom Dilatush Collection


REF Tavernier-Gravet Plastic
Tavernier-Gravet Plastic - c1950
Made in Paris, France
Front Scale (extended)
25cm // A [ B, CI, C ] D
Back Scale (Slide): [S, S&T, T ]
Scan Courtesy of Rod Lovett Collection


REF Tavernier-Gravet Beghin
Tavernier-Gravet Beghin - dc 7-23(july 1923)
Made in France - Rue Mayet 19, Paris
Front Scale
35cm // A, DF [ CF, CI, C ] D, K, L
Back Scale (Slide): [S, T, B ]
Cursor: 3 hairlines
Scan Courtesy of Tom Dilatush Collection

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