The Blickensderfer typewriter No. 6 was manufactured by the Blickensderfer Manufacturing Company of Stamford, Connecticut from 1910 to around 1928. The Blickenderfer No. 6 was essentially the Blickensderfer No. 5 in an aluminum frame, and could be ordered with either a standard QWERTY keyboard or a DHIATENSOR keyboard. This model has the DHIATENSOR keyboard, which Blickensderfer called their “scientific” keyboard because the most used letters—“D, H, I, A, T, E, N, S, O, and R”—were on the bottom row nearest the space bar to minimize necessary hand movement. The aluminum frame of the No. 6 made it exceptionally portable, weighing only 5 pounds, and came in a leatherette case for easy carrying.
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