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Contact SupplierTubular Inside Micrometers Series 137-Extension Rod Type,Series 139-Extension Pipe type,Series 140-Extension Pipe TypeSeries 137Features
Wide range of ID measurements by combining extension rods (pipes) and anvils with the micrometer head.
Carbide-tipped measuring faces are available. (series 137)
The 139 and 140 series use highly-durable large-diameter extension pipes.
Series 137 supplid in fitted plastic case except 1550mm60in come in wooden case.
Series 139 supplied in fitted wooden case except 500mm20in come in plastic case.
Series 140 supplied in fitted wooden case.
Technical Data
Accuracy: ±(.00012 .00005n (.00004×R2))in
Graduation: 0.01mm or .001"