Digital Dial Indicator Specifications：. Bore Gauge Specifications：. Sealed gauge head, aluminum housing, glass mirror cover, dustproof, clear scale, intuitive data, sturdy and wear-resistant. 12 Different Specifications of Gauge: 50 mm, 55 mm, 60 mm, 65 mm, 70 mm, 75 mm, 80 mm, 85 mm, 90 mm, 95 mm, 100 mm, 105 mm.
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