Facit Model T

Beginning with the Model T in 9 x 8 x 13 format in 1932, the machine progressed through the Model TK (1936) and the NTK (1954) to the C1-13 of 1957, which continued with only minor changes into the early 1970s.Facit's traditional pinwheel design was replaced by the ten-key Model T in 1932.The first of the Facit "inverted" pinwheel calculators was the Model T from 1932.