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Steel gauge blocks set
(for metric: 103PCS/set, 87PCS/set, 47PCS/set, 32PCS/set)
Single gauge blocks(from 1.001mm to 1000mm)
Angle gauge blocks(7PCS/set)
Gauge blocks for testing micrometers and vernier calipers(12PCS/set, 10PS/set, 8PCS/set)
Class: 0, 1, 2, 3
The accuracies conform to ISO standards.