Tubular Inside Micrometers Series 137-Extension Rod Type,Series 139-Extension Pipe type,Series 140-Extension Pipe Type

Series 137
  • 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.

Technical Data
Accuracy:  ±(.00012+.00005n+(.00004×R/2))in
Graduation: 0.01mm or .001"
*with carbide tipped face

Parts Break Down


Order NoImageRange Extension RodsHead Travel
137-211137-211.jpg2-6in.5,1,2 in.5in
137-212137-212.jpg2-12in.5,1,2 (2pcs.),4 in.5in
137-213-2-20in.5,1,2 (2pcs.),4,8 in.5in
137-214-2-40in.5,1,2 (2pcs.),4,8,(2pcs),12 in.5in
137-215137-215.jpg2-60in.5,1,2 (2pcs.),4,8,(3pcs),12(2pcs) in.5in
137-216*-2-6in.5,1,2 in.5in
137-217*-2-12in.5,1,2 (2pcs.),4 in.5in
137-218*137-218_Partial.jpg2-20in.5,1,2 (2pcs.),4,8 in.5in
137-219*137-219_Partial.jpg2-40in.5,1,2 (2pcs.),4,8,(2pcs),12 in.5in
137-220*137-220.jpg2-60in.5,1,2 (2pcs.),4,8,(3pcs),12(2pcs) in.5in
139-178139-178.jpg4-20in1,2,4,8 in1in
139-179139-179.jpg4-36in1,2,4,8,16 in1in
139-180139-180.jpg4-52in1,2,4,8,16 (2 pcs) in1in
139-181139-181.jpg4-68in1,2,4,8,16 (3 pcs) in1in
139-182139-182.jpg4-84in1,2,4,8,16 (4 pcs) in1in
140-161-40-80in2,4 (2pcs),8,20 in2in
140-162140-162_Box.jpg40-120in2,4, (2 pcs) 8,20,40 in2in
140-163-40-160in2,4, (2 pcs) 8,20,40 (2 pcs) in2in
140-164140-164_Box.jpg40-200in2,4, (2 pcs) 8,20,40 (3 pcs) in2in
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