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A. T .& T. Telephone Guy Wire Circular Slide Rule Calculator (Plastic)
A. T .& T. Telephone Guy Wire Circular Slide Rule Calculator (Plastic)

A. T .& T. Telephone Guy Wire Circular Slide Rule Calculator (Plastic)

$ 7.89

Availability: 56 in stock
  • Country/Region of Manufacture: United States
  • Condition: Very good general condition, clean and markings easily readable.
  • Time Period Manufactured: 1930-Now
  • Featured Refinements: Circular Slide Rule
  • Modified Item: No

    Description

    A. T. & T. BELL SYSTEM GUY WIRE CALCULATOR A circular sliderule used to determine the diameter and length of guy wires. 3 circular plastic disks, two 3 inch and one (central) 3.5 inches, attached with rivet. All in very good general condition, clean and markings easily readable. Directions for use on back dial.