Vintage Texas Instruments SR-50 Slide Rule Calculator - Untested LED For Parts

Vintage Texas Instruments TI SR-50 Slide Rule Calculator 1973 PARTS UNTESTED

Texas Instruments SR-50 Slide Rule Calculators with Cases and 1 Charger

Vintage Texas Instruments SR-50 Calculator Box Manual No Battery Parts Repair

Vintage Texas Instruments SR-50 Slide Rule Calculator - Untested No Charging Ca

Vintage Texas Instruments TI SR-50 Slide Rule Calculator 1973 PARTS UNTESTED

Vintage Commodore SR-1400 Electronic Slide Rule Calculator - Untested

Texas Instruments Sr -50 Side Rule Calculator For Parts Or Repair , Untested