65 column Powers Samas tabulator, sectioned, cut away, illuminated and slowed to working speed of 10 cards per minute, 1930. 65 column Powers Samas tabulator 1930
26 column round hole tabulator, by Powers-Samas, United Kingdom, 1925-1935 26 column round hole tabulator c. 1930 1930
BTM/Hollerith Auto Control ICT MN41 Non-printing Tabulator, c.1923 Automatic non-printing tabulator 1923
Operating instructions, descriptive labels, and original 45 column cards for BTM/Hollerith Auto Control ICT MN41 Non-printing Tabulator, c.1923 Accessories for Automatic non-printing tabulator 1923
26 column round hole tabulator, and two hole sensor units, by Powers-Samas, United Kingdom, 1925-1935 26 column round hole tabulator 1930
ICL 40 col Tabulator, machine no.409/4107, with two detachable shelves and one data rack ICL 40 col Tabulator, machine no.409/4107
Cards and descriptive material for ICT Hollerith 80 col Balancing Tabulator, non printing, type 707 Non-printing balancing tabulator
Operating Instructions, cards, and descriptive label for semi-automatic 3-counter tabulator, early example, c.1905, (no.0312) Accessories for semi-automatic 3 counter tabulator 1905
Semi-automatic 3-counter tabulator, early example, c.1905, (no.0312) Semi-automatic 3 counter tabulator 1905