It was listed by Harrington Antiques. Sold pieces stay on Sellingantiques as a record of what has passed through, and the next one is rarely far away.
Harrington Antiques has dated these Ebonised Artists Reducing Lens to the 1900s.
These handheld and tabletop lenses, acting as the opposite of a magnifier, allowed painters to check perspective and fit complex landscapes or subjects onto their canvases, acting as an early, analog artistic filter.

This table top example has a wood-mounted lens upon a turned pillar and base. Light signs of wear commensurate with age. Displays well extremely.
Dimensions:-
Height: 22cm
Diameter of base: 12cm
DELIVERY
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Harrington Antiques has dated these Ebonised Artists Reducing Lens to the 1900s.
Antiques & decorative interior pieces.
You can view the stock and full dealer information on the Harrington Antiques Profile Page