Details
A vinter's brass calculating rule,
by Dring & fage, London, marked 9in. Verie, with four un-numbered scales marked at the end A, D, S.Stg. and S.Lyg. -- 18 1/8in.(46cm.) long
by Dring & fage, London, marked 9in. Verie, with four un-numbered scales marked at the end A, D, S.Stg. and S.Lyg. -- 18 1/8in.(46cm.) long
Further details
See illustration