細節
A FRENCH MAHOGANY-CASED MINING DIAL, signed________________________
with needle and clamp, the sighting telescope mounted at the side by an axis, with sliding cover-- in. ( cm.) wide; and a pocket compass by W. & L.E. Gurley? in mahogany case--3 1/8in. (7.7cm.) wide
with needle and clamp, the sighting telescope mounted at the side by an axis, with sliding cover-- in. ( cm.) wide; and a pocket compass by W. & L.E. Gurley? in mahogany case--3 1/8in. (7.7cm.) wide