The Starrett 585 micrometers have a pointed spindle and a double V-anvil, both shaped to contact the screw thread as shown in the drawing. The micrometer reading therefore gives the pitch diameter. 25-50mm Range, 0.01mm Grad, 4.5-6 Threads per mm.
Specifications
Brand : Starrett
Category : Specialty Micrometers
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Description
The Starrett 585 micrometers have a pointed spindle and a double V-anvil, both shaped to contact the screw thread as shown in the drawing. The micrometer reading therefore gives the pitch diameter. 25-50mm Range, 0.01mm Grad, 4.5-6 Threads per mm.