- Item type
- Object
- Makers
- Bausch and Lomb
- Provenance
- Deposited by the Royal Microscopical Society with their collection.
- Primary inscriptions
- "BAUSCH & LOMB OPTICAL CO. ROCHESTER, N.Y. & NEW YORK" on paper strip. "R.M.S. No 71" on drum
- Dimensions
- Diameter: 73mm Height: 80mm Width: 74mm Depth: 95mm Weight: 360g
- Inventory No
- 15444
- Accession Number
- 1970-101/part
Description
The circular cast iron base is finished in black enamel, and it supports a micrometre screw with a copper alloy drum as a count wheel. The rim is covered with a varnished paper strip which has seven calibrated lines.
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JJ Bausch and H Lomb, both German immigrants, formed a partnership making spectacles in Rochester, NY in the early 1850's. Their first mass-produced microscopes appeared in 1874. In 1875 they hired Ernst Gundlach of Wetzlar, Germany, who was well known for his objectives.
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