Tabulator for curves 0 to 8 inches
1864-1916
45 col. tabulator
1926
45 col. Tabulator
Hand operated Mercury cup tabulator
1908
65 column Powers Samas tabulator
1930
26 column round hole tabulator
1930
Punched card tabulator, model no. 902
1960
Semi-automatic 3 counter tabulator
1905
26 column round hole tabulator c. 1930
1930