PTC - Model 306L - Dial Durometer w/ case - Type A -

PTC Instruments 306L Type "A" Scale Durometer

CALIBRATED REX Gauge Co. Durometer Type A Model 1600 Standard Case 261176

PTC instruments DUROMETER, ASTM TYPE A, MODEL 306 with box

REX Gauge Co. Durometer Type A Model 2000 Original Case BOEING FACTORY SURPLUS

Durometer Type a Rex Dial Gauge Model 1700 Vertical Precision Tool with Case

PTC Instruments 306L Type "A" Scale Durometer

PTC Type A Durometer Model 306L