$215
Cased Pocket Sextant and Three Other Surveying Instruments, 20th century, an anodized brass pocket sextant with cover reading "Warren-Knight Philadelphia U. S. Engineer Dept. 1918," with leather case; a Keuffel & Esser Co. clinometer with compass, level, and protractor scale; an unmarked clinometer, and a cast iron bubble level with fine adjustment knob.
Auctioneer:
Skinner
Date:
2016-06-16