Details
An oxidised-brass combined compass and clinometer,
by J. Hicks, in cloth-covered card case -- 4½in. (11.5cm.) long; an ivory sector; an ivory scale rule; a slide rule; and five boxwood rules (A Lot)
by J. Hicks, in cloth-covered card case -- 4½in. (11.5cm.) long; an ivory sector; an ivory scale rule; a slide rule; and five boxwood rules (A Lot)