Compare Model Drawings, CAD & Specs Availability Price
Lockable Differential Micrometer, 13 mm Coarse, 0.2 mm Fine, 11 lb.
In Stock
In Stock
Lockable Differential Micrometer, 25 mm Coarse, 0.2 mm Fine,11 lb. Load
In Stock
In Stock
Lockable Differential Micrometer, 6 mm Coarse, 0.2 mm Fine, 11 lb. Load
In Stock
In Stock



Differential Micrometer Drive

When manual resolution of much less than one micrometer is needed, a differential screw is recommended. A differential micrometer uses a spindle with two opposing screw threads of slightly differing pitches (P1 and P2). As the spindle rotates, the net travel of the micrometer tip is : 1/Peff = 1/P1 - 1/P2. This mechanism allows extremely small adjustments using commonly available screws.

Lockable Coarse and Fine Adjustments

The DM-L Series is the first actuator where both coarse and fine travel can be locked with a single knob. Coarse positioning enables rapid translation with a sensitivity of 1 µm while the fine adjustment knob allows ultra-fine positioning over 0.2 mm travel, with 0.1 µm sensitivity.

Compatible With a Wide Range of Newport Stages and Mounts

DM-L micrometers have the industry-standard 9.5 mm mounting interface making them both interchangeable with other micrometers and compatible with Newport stages and mounts like those listed below.

  • 461/462 Series
  • 561/562 Series
  • 423 Series
  • 426 Series
  • 460P Series
  • 460A Series
  • 401/406 Series
  • RS Series
  • GON Series