Mechanical Pocket Calculator Business (0791)
Index: 0791
Year: Around 1920-1930
Maker: Master, Belgium
Dimensions: 12 x 1 x 16 cm
Info
Mechanical calculator "Business". Seems the body is made out of hardwood with the front and back plate made out of tin-plate.
Inscriptions:
Business
Machine a Calculer
Roule Sur Billes
Fabriqué en Belgique
Made in Belgium
References/Links/More Info
Jaap's Mechanical Calculator Page
Also on Jaap's site, the old leaflet
