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circular slide rule Stadia computer MINT

circular slide rule Stadia computer MINT

$ 18.33

Availability: 100 in stock
  • All returns accepted: Returns Accepted
  • Item must be returned within: 30 Days
  • Refund will be given as: Money Back
  • Restocking Fee: No
  • Return shipping will be paid by: Buyer
  • Condition: New

    Description

    Only
    ONE
    remaining!
    Back before electronic distance measurements, surveyors used transits and stadia rods. By measuring the difference numbers viewed between the upper and lower crosshairs, the distance to the next way point could be measured. This Stadia Computer is a circular slide rule that converts the actual (slant) distance measured to the true horizontal distance.
    NSN 6675-00-664-4676. Reasonably heavy white plastic. Besides being useful for actual surveying, these make a dandy rare and unusual circular slide rule collectible.
    The circular slide rule is 5 3/4 inches square. The back has an NSN number on it.
    We accept PayPal. No foreign bidders. US-only buyer to pay postage of .85. AZ residents add sales tax.
    Shipping may be combined on multiple or quantity orders.
    Please contact us for the lowest possible combined shipping quote.
    PayPal only. US only bidders/buyers/shipments. Located at 85552.
    For more info, visit our tinaja online resources. Please contact us if
    you need more info or additional resources.
    srfile stadia01.j  44