Details
A Madas calculator,
No. 5942, with seven slides, twelve-digit capacity, sloping brass top-plate with USA 1913 Patent stamp and black iron case and cover with (damaged) Madas transfer -- 19in. (49cm.) wide
No. 5942, with seven slides, twelve-digit capacity, sloping brass top-plate with USA 1913 Patent stamp and black iron case and cover with (damaged) Madas transfer -- 19in. (49cm.) wide