Tubular Inside Micrometers Series 137-Extension Rod Type,Series 139-Extension Pipe type,Series 140-Extension Pipe Features:
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 1550mm/60in come in wooden case.
Series 139 supplied in fitted wooden case except 500mm/20in come in plastic case.
Series 140 supplied in fitted wooden case.