Dial Callipers, caliper, digital caliper,Caliper, vernier caliper metal casing caliper dial caliper Dial Callipers, caliper, digital caliper,Caliper,vernier calipermetal casing caliperdial caliperDial Callipers, caliper, digital caliperProduct Size: 237 x 78 x 19mmMeasures in: 100mm ... select uniformly sized stones .Packaged in a quality compact case. vernier caliper