Starrett Inside Micrometer 124 Willrich Precision Instruments
2-point internal micrometers
Mahr Federal Inside Micrometer Micromar 44 CB
Mahr 44 EWR Digital Self-Centering Inside Micrometer Sets Micromar
Mahr, Inc. Micrometers from Component Distributors
德国马尔MICROMAR 44A/44AS 自调心内径千分尺
Mahr-Germany 4163004 Inside Micrometer (44F, 100-125mm)
Mitutoyo Small Hole Gage Set Series 526
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Mahr Metrology