細節
A brass surveying level,
signed on the telescope Elliott Bros. 30 Strand, London, with rack and pinion focusing, lens hood and dust cap; a military-pattern brass clinometer; a combined compass/clinometer with folding sights; and a brass-cased marching compass (4)
signed on the telescope Elliott Bros. 30 Strand, London, with rack and pinion focusing, lens hood and dust cap; a military-pattern brass clinometer; a combined compass/clinometer with folding sights; and a brass-cased marching compass (4)