- Wide range of inside measurements possible by combining extension rods and anvils with the micrometer head.
- The sleeve is rotated to adjust the index line position when setting to a length standard.
Specifications:
| Metric | |||
| Order No | Range | Head Travel | Extension Rods |
| 137-011 | 50-63mm | 13mm | – |
| 137-013 | 50-63mm | 13mm | – |
| 137-201 | 50-150mm | 13mm | 13,25,50 mm |
| 137-202 | 50-300mm | 13mm | 13,25,50 (2pcs),100 mm |
| 137-203 | 50-500mm | 13mm | 13,25,50 (2pcs),100,200 mm |
| 137-204 | 50-1000mm | 13mm | 13,25,50 (2pcs),100,200(2pcs),300 mm |
| 137-205 | 50-1500mm | 13mm | 13,25,50 (2pcs),100,200(2pcs),300(2pcs) mm |
| 137-206 | 50-150mm | 13mm | 13,25,50 mm |
| 137-207 | 50-300mm | 13mm | 13,25,50 (2 pcs),100 mm |
| 137-208 | 50-500mm | 13mm | 13,25,50 (2 pcs),100,200 mm |
| 137-209 | 50-1000mm | 13mm | 13,25,50 (2 pcs),100,200(2pcs),300 mm |
| 137-210 | 50-1500mm | 13mm | 13,25,50 (2 pcs),100,200(2pcs),300(2 pcs) mm |
| Inch | |||
| Order No | Range | Extension Rods | Head Travel |
| 137-012 | 2-2.5in | – | .5in |
| 137-014 | 2-2.5in | – | .5in |
| 137-211 | 2-6in | .5,1,2 in | .5in |
| 137-212 | 2-12in | .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 |
| 137-215 | 2-60in | .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 | 2-20in | .5,1,2 (2pcs.),4,8 in | .5in |
| 137-219 | 2-40in | .5,1,2 (2pcs.),4,8,(2pcs),12 in | .5in |
| 137-220 | 2-60in | .5,1,2 (2pcs.),4,8,(3pcs),12(2pcs) in | .5in |
