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HOLO-CHROME Co. SOCKET SCREW SELECTOR Calculator Machinist
HOLO-CHROME Co. SOCKET SCREW SELECTOR Calculator Machinist

HOLO-CHROME Co. SOCKET SCREW SELECTOR Calculator Machinist

$ 1.57

Availability: 71 in stock
  • Modified Item: No
  • Country/Region of Manufacture: United States
  • Manufacturer: HOLO-CHROME Co.
  • Condition: Operates fine and legible good condition

    Description

    Purchased at an estate auction of an antique tool collector.  This is a
    HOLO-CHROME Co. SOCKET SCREW SELECTOR Calculator
    used by Machinist to calculate the right screw type and thread, and thread pitch,