Details
A TIM calculator
by Ludwig Spitz & Co., supplied by The Oskar Muller Co., New York, in brass frame on iron base with eight slides and 16-digit capacity -- 21½in. (54.5cm.) wide, 20th century
by Ludwig Spitz & Co., supplied by The Oskar Muller Co., New York, in brass frame on iron base with eight slides and 16-digit capacity -- 21½in. (54.5cm.) wide, 20th century