- 1個主體裡有數個“內置量桿的接長桿”組合，可以測量多種尺寸範圍的內徑尺寸。
- 兩種測量面可選，帶硬質合金頭和不帶硬質合金頭。
- 需基點調整。
- 另需用於基點調整的基準規。
規格:
| Metric | |||
| Order No | Range | Head Travel | Extension Rods |
| 337-101 | 200-225mm | 25mm | – |
| 337-301 | 200-1000mm | 25mm | 25,50,100,(2 pcs),200,300 mm |
| 337-302 | 200-1500mm | 25mm | 25,50,100,,200,300(3 pcs) mm |
| Inch/Metric | |||
| Order No | Range | Head Travel | Extension Rods |
| 337-102 | 8-9in- 203.2-228.6mm |
1in | – |
| 337-303 | 8-40in- 203.2-1016mm |
1in | 1, 2, 4,(2pcs.) 8, 12 in. |
| 337-304 | 8-60in- 203.2-1524mm |
1in | 1, 2, 4, 8, 12 in.(3pcs) |
