Details
An unusual 17th-Century folding rule,
engraved 21-1-18, with two folding arms, the ebony guard with silver piqué linear divisions, stamped on one hinge plate I.R.I. -- 11 3/8in. (29cm.) long (folded)
See Illustration
engraved 21-1-18, with two folding arms, the ebony guard with silver piqué linear divisions, stamped on one hinge plate I.R.I. -- 11 3/8in. (29cm.) long (folded)
See Illustration