特點
* 通過連接延長桿 (延長管) 和帶有微分頭的測砧可擴大測量范圍。 長管。
* 可選擇硬質合金測量面。(137 系列) ，* 139 和 140 系列采用高性／大直徑延

技術參數(shù)
:  
  * 137, 139 系列: ±(3+n+L/50)μm* 
  * 140 系列:  ±(7+n+L/50)μm* 
    *n 為桿數(shù)，L 為測量長度(mm)，小數(shù)圓整
分度值:  0.01mm 或 .001"

公制型 延長管型
測量范圍 貨號 測頭行程 延長管
100 - 125mm 139-001 25mm —
100 - 500mm 139-173 25mm 25mm, 50mm, 100mm, 200mm
100 - 900mm 139-174 25mm 25mm, 50mm, 100mm, 200mm, 400mm
100 - 1300mm 139-175 25mm 25mm, 50mm, 100mm, 200mm, 400mm (2 個)
100 - 1700mm 139-176 25mm 25mm, 50mm, 100mm, 200mm, 400mm (3 個)
100 - 2100mm 139-177 25mm 25mm, 50mm, 100mm, 200mm, 400mm (4 個)
1000 - 2000mm 140-157 50mm 50mm, 100mm (2 個), 200mm, 500mm
1000 - 3000mm 140-158 50mm 50mm, 100mm (2 個), 200mm, 500mm, 1000mm
1000 - 4000mm 140-159 50mm 50mm, 100mm (2 個), 200mm, 500mm, 1000mm (2 個)
1000 - 5000mm 140-160 50mm 50mm, 100mm (2 個), 200mm, 500mm, 1000mm (3 個)