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The Tektronix 4957 is a graphics input tablet compatible with the 4100A Series, 4110 Series, 4120 Series and 4200 Series terminals using an RS-232 interface.

Tektronix 4957
Graphics input tablet 4957 Graphics input tablet Produced from (?) to (?) Manuals 4957 Graphics Tablet Graphic Tablet (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

Input is made with either a 4 button cursor or stylus. The model number 4957 is used for 2 different size tablets, 16.5" x 15.5" and 12" x 18" (Option 2).

The 1988 catalog lists this tablet as specifically compatible with the 4106A, 4107A, 4109A, 4110A and all 4100 Series and 4200 Series terminals.