PTC Instruments Model 409 Ergo Style Analog Durometer ASTM Type D 0-100

PTC Instruments Model 408 Ergo Style Analog Durometer ASTM Type A 0-100

PTC Instruments Analog Ergo Style Durometer ASTM Type D Model 409

PTC Instruments Model 408 Analog Ergo Style Durometer ASTM Type A

PTC INSTRUMENTS Model 409 Type D ASTM D2240 Ergo Analog Durometer

PTC Instruments 306L ASTM Type A Analog Durometer Gauge w/ Case

PTC Instruments Type A Durometer Model 307L

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