American, early 20th century, brass transit compass, by W. & L.E. Gurley, Troy, New York, dial marked "202020", scope 6-7/8 in., compass needle 4-1/2 in., housed in wooden box with retail markings for B.K. Elliott, Pittsburgh; wooden tripod, brass tipped feet, at longest 59 in.; slide rule, by Keuffel & Esser Co., model 542274, with leather sheath marked "E.R. Bird", 12-1/2 in. - Provenance: Private Collection, North Carolina

fluid movement at micrometer wheel, leather strap to box dry and with single separation, expected rub and abrasion to tripod legs, slide mechanism of ruler with hairline surface fissure