Untested, as pictures show the cord is in a state of disarray. Overall the product is in good condition all knobs and adjustments freely move smoothly. Some aging and paint chipping but it's mainly the cord.

Antique early 1900s Bausch & Lomb horizontal straight-rail lensometer/focimeter. Features a rare early floral scalloped adjustment knob and original riveted metal factory ID tag stamped with serial number 6741. Heavy cast iron candlestick base with rear lamp housing. Great optometry museum or steampunk display piece.