Merchants' Graphic Profit Finder, mid 20th century

Made:
1950-1970

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Merchant's Graphic Profit Finder, plastic circular slide rule giving percentage margin of profit on selling price

Merchant's Graphic Profit Finder, plastic circular ready reckoner giving percentage margin of profit on selling price, 1950-1970. Many circular ready reckoners were devised for very specific purposes in the mid 20th century.

Details

Category:
Mathematics
Object Number:
1989-605
type:
ready reckoners
credit:
Auction Team Koln