Two BBT Krauss France microscope objectives, 20th century Set o...
Two BBT Krauss France microscope objectives, 20th century
Set of two interchangeable optical objectives for a microscope or binocular device, made of black-lacquered metal with metal mounts. Both lenses bear the “BBT Krauss France” mark and are engraved “3.5x” and “7x,” respectively. Presented in their original wooden case, lined with black felt and featuring compartments designed to hold the two lenses.
Details: Period: first half of the 20th century, Origin: France, Manufacturer: BBT Krauss, Magnifications: 3.5x and 7x, Materials: metal, optical glass, and wood, Width without handle: 5.5 cm, Heights: 5 cm and 7.5 cm, Condition: signs of use; lenses visually clean; case shows normal wear.
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Two BBT Krauss France microscope objectives, 20th century
Set of two interchangeable optical objectives for a microscope or binocular device, made of black-lacquered metal with metal mounts. Both lenses bear the “BBT Krauss France” mark and are engraved “3.5x” and “7x,” respectively. Presented in their original wooden case, lined with black felt and featuring compartments designed to hold the two lenses.
Details: Period: first half of the 20th century, Origin: France, Manufacturer: BBT Krauss, Magnifications: 3.5x and 7x, Materials: metal, optical glass, and wood, Width without handle: 5.5 cm, Heights: 5 cm and 7.5 cm, Condition: signs of use; lenses visually clean; case shows normal wear.
Estimate
Time, Location
Auction House
