Precision Measuring Tools Goodson Tools SuppliesGR 9241 Sunnen 0001 Reading Dial Bore Gauge $1 Hand Held Refractometer $ HT 45RC Rockwell Hardness Tester $ IEC 56 Internal Electronic Caliper $ KZIX 3500 Probe Extension for Small Diameter Sunnen Dial Bore Gauge $ MCBG 160 Metric Dial Bore