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Item: OA.466
Likely 19th century, ebony and brass, adjustable parallel rules.
22.8cm long (9 inches)
Condition: good, expected wear and minor scratches for age; original condition.
Price: SOLD
Note: The Australian dollar is around ¾ the USD. Currency Conversion Link:
Can be bought on-line with PayPal and posted worldwide

Can also be bought on-line using PayPal or Credit Card and posting worldwide