Category:Portable mechanical calculators

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Subcategories

This category has the following 6 subcategories, out of 6 total.

A

Addiator (38 F)
Addometers (3 F)

B

BriCal British Calculators (2 F)

C

Curta calculator (3 C, 1 P, 20 F)

E

Exposure calculators (1 C, 11 F)

R

Portable mechanical calculators in the Ridai Museum of Modern Science (19 F)

Media in category "Portable mechanical calculators"

The following 11 files are in this category, out of 11 total.

Calculatrice mécanique Everest.JPG 3,072 × 2,304; 3.61 MB
Comptator 9 von Hans Sabielny (Zahnstangenaddierer).jpg 1,200 × 1,600; 345 KB
Contex 10.JPG 1,944 × 2,592; 1.37 MB
Hanovera računarska mašina.jpg 4,112 × 2,730; 3.26 MB
Matson calculator (back).jpg 2,166 × 1,380; 217 KB
Matson1.JPG 2,199 × 1,368; 333 KB
Old adding machine.JPG 1,087 × 367; 198 KB
Otis King's.JPG 480 × 320; 38 KB
Računska mašina CALCOREX.jpg 4,288 × 2,848; 1.9 MB
Računska mašina Mercedes.jpg 1,911 × 1,695; 947 KB
RechenmaschineRecord.JPG 1,222 × 948; 275 KB

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Mechanical calculators