Details
An electrum surveying protractor,
by Elliott Bros., in mahogany case -- 7in. (17.8cm.) wide; and a surveying compass by Dollond, London, with two levels, folding sight (needle and glass missing), in fitted leatherette-covered case -- 5¾in. (14.6cm.) wide (2)

More from Scientific & Engineering Works of Art, Instruments & Models

View All
View All