Starrett 8-13 Pitch .0001" Micrometer 0 to 1" 575A-P Calibrated
You are bidding on a Starrett .0001" Screw Pitch 0 to 1" Micrometers- 8 to 13 P - V & American Nat., Model # 575A-P - recently calibrated. These 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. Readability Features Range - 8 to 13 Threads per Inch Starrett satin chrome finish - no glare - resists rust Advanced sleeve design with staggered lines and distinct figures for precise and easy readability Decimal equivalents on inch tools Ease-of-Handling Features Balanced frame and thimble design for easy handling and better readability Gracefully designed tapered frame for use in narrow slots and tight places Furnished with fixed (non-rotating) anvil Accuracy and Long-Life Features One-piece frame of drop forged steel Extremely hard and stable one-piece spindle (the heart of our accuracy) Quick and easy adjustment Starrett workmanship Design allows 50% to 75% contact with the thread to be measured, thereby insuring contact with the pitch diameter at all times Design also insures against contact with the root area of the thread Tools are accurate to ±.0002 or 0.004mm The L. S. Starrett Company has been a continuous symbol of leadership and dependable service in the manufacture of fine precision tools. I will fully guarantee this item with a cost of over $300 - "Proudly made in the US". We have lots of quality inspection tools available - see my other auctions.
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