511-921-20 (0.01mm) 2-Point Inside Measuring Bore Gauge 18-150mm
511-716-20 (0.01mm) 2-Point Inside Measuring Bore Gauge 250-400mm
511-744-20 (0.0005") 2-Point Inside Measuring Bore Gauge 4-6.5
511-212-20 (0.0001") 2-Point Inside Measuring Bore Gauge 0.24-0.4
511-746-20 (0.0005") 2-Point Inside Measuring Bore Gauge 10-16