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Description
Rare antique 1940s Bausch & Lomb Konimeter field microscope, a device used historically to measure particulate dust levels in work environments such as factories, foundries and mines. It measures dust concentration by drawing air onto a sticky adhesive surface for analysis. It features a manual aspirating bulb for suction and an eyepiece for viewing the collected sample. This type of instrument was essential in early industrial hygiene for protecting workers from respiratory hazard. Includes dovetailed case with lock and key.
Condition
Wear and distressing from age and use, not tested, dry rot, case locks but key bent/stuck in mechanism, may have missing components.
Dimensions
11" x 4" x 9.5" (Width x Depth x Height)