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Tektronix 911 Statistician Desktop Calculator
10 digit (plus 2 digit exponent) Nixie display, statistical function
calculator. Introduced in early '70. Originally made by Cintra, but later
rebadged by Tektronix, when Tek purchased Cintra in May of 1971. Physical
appearance virtually identical to the
Cintra/Tektronix 909 with only difference being
function of four keyboard keys.