Dial Indicators, Micrometers, Calipers manufacturer / supplier in China, offering 18-35mm Dial Bore Gauge 0.001mm Graduation Accurate Measurement for Grooves Measurment, 18-35mm Precision Internal Bore Gage 0.001mm for Measuring Stepped Holes, 18-35mm Internal Diameter Gage 0.001mm Accuracy Ideal for Inspection of Precision Machined Bores and so on.