A Sykes hydrometer (missing 1 weight and magnifying glass) together with Dring & Fage slide rule, a 1935 table for use with Sykes hydrometer parts 1 and 2, a 1962 table for use with Sykes hydrometer part 1 and 2
withdrawn from auction
281
A military prismatic compass by E R Watts & Sons no.2753 Mk 1X