-40%
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6" IVORY RULE SECTOR RULE

$ 129.35

Availability: 100 in stock
  • Brand: NO MAKER MARK
  • Modified Item: No
  • Country/Region of Manufacture: Unknown
  • Original/Reproduction: Antique Original
  • Refund will be given as: Money Back
  • Item must be returned within: 30 Days
  • Condition: Used
  • Return shipping will be paid by: Buyer
  • Restocking Fee: No
  • All returns accepted: Returns Accepted

    Description

    6" IVORY RULE SECTOR RULE. Condition is "Used". Shipped with USPS First Class.  Fine example of Sector Rule.  Some yellowing of ivory but very readable.  a lot of scales that are a mystery to me.  Long scales of bottom front edge are T= tangent, S= sine, and N= logarithm.