Details
An Addometer calculator,
by Reliable Typewriter and Adding Machine Co., Chicago, with seven circular digital displays, clearing lever, stylus, oxidised metal body with edge graduated in inches and instruction sheet, in maker's case --11½ in. (29 cm.)
by Reliable Typewriter and Adding Machine Co., Chicago, with seven circular digital displays, clearing lever, stylus, oxidised metal body with edge graduated in inches and instruction sheet, in maker's case --11½ in. (29 cm.)