产品描述：
External Micrometers with Heat Shield
Tapered (on anvil side) for hard to reach places. Supplied without measuring standards. Tungsten Carbide tipped anvils. Accuracy:
Flatness: 0.6 mu m for 0.01mm (0.001") graduation,
0.3 mu m for 0.001mm (0.0001") graduation.
Parallelism: 1 mu m for 0-25mm (0-1") Models, 2 mu m for 25-50mm (1-2") Models.
Instrument Error: /-2 mu m.