-
Surveying and Measuring Instruments...
-
4 Leveling Instruments...
-
Large French Graphometer by Lennel, c. 1780...
-
French Graphometer by Bernier, Paris, c. 1780...
-
Hermann Ausfeld Repeating Theodolite, c. 1845...
-
Full-Circle Protractor by Gottfried Hohnbaum,...
-
3 English Surveying and Navigation Instrument...