- 使用一個主尺與可更換測桿及接長桿結合使用，可以擴大內徑測量範圍。
規格:
| Metric | |||
| Order Number | Range | Head Travel | Remarks |
| 141-001 | 25-32mm | 7mm | – |
| 141-003 | 25-32mm | 7mm | with carbide tipped face |
| 141-009 | 200-225mm | 25mm | – |
| 141-011 | 200-225mm | 25mm | with carbide tipped face |
| 141-025 | 50-63mm | 13mm | – |
| 141-027 | 50-63mm | 13mm | with carbide tipped face |
| 141-101 | 25-50mm | 7mm | with 2 rods |
| 141-103 | 25-50mm | 7mm | with carbide tipped face 2 rods |
| 141-117 | 200-500mm | 25mm | with 3 rods |
| 141-118 | 200-1000mm | 25mm | with 8 rods |
| 141-205 | 50-200mm | 13mm | with 3 rods |
| 141-206 | 50-300mm | 13mm | with 5 rods |
| 141-211 | 50-200mm | 13mm | with carbide tipped face 3 rods |
| 141-212 | 50-300mm | 13mm | with carbide tipped face 5 rods |
| Inch | |||
| Order Number | Range | Head Travel | Remarks |
| 141-002 | 1-1.25in | .25in | – |
| 141-004 | 1-1.25in | .25in | with carbide tipped face |
| 141-010 | 8-9in | 1in | – |
| 141-012 | 8-9in | 1in | with carbide tipped face |
| 141-026 | 2-2.5in | .5in | – |
| 141-028 | 2-2.5in | .5in | with carbide tipped face |
| 141-102 | 1-2in | .25in | with 2 rods |
| 141-104 | 1-2in | .25in | with carbide tipped face 2 rods |
| 141-121 | 8-20in | 1in | with 3 rods |
| 141-122 | 8-40in | 1in | with 8 rods |
| 141-208 | 2-8in | .5in | with 3 rods |
| 141-214 | 2-8in | .5in | with carbide tipped face 3 rods |
| 141-215 | 2-12in | .5in | with carbide tipped face 5 rods |
| 141-233 | 2-12in | .5in | with 5 rods |
