When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Original early Bausch & Lomb Optical Company compound monocular laboratory microscope dating to approximately 1926–1927.This substantial scientific instrument was manufactured by Bausch & Lomb Optical Co. of Rochester, New York, one of America’s most important historic optical manufacturers.The microscope is marked with serial number 192049. Based on known Bausch & Lomb serial-number chronology, this places its manufacture at approximately 1926–1927.The microscope also retains several period Bausch & Lomb optical components and patent markings that are consistent with this dating.Features and markings include:* Bausch & Lomb Optical Co., Rochester, N.Y., U.S.A.
* Serial No. 192049
* Circa 1926–1927
* Compound monocular laboratory microscope
* Heavy black enameled horseshoe-style base and stand
* Brass/copper-finished monocular body tube
* Triple revolving objective nosepiece
* Mechanical specimen stage
* Coarse and precision fine-focus adjustments
* Fine-adjustment mechanism marked “PAT. JAN. 5, 1915”
* Period Bausch & Lomb objectives
* Bausch & Lomb 4 mm / 0.65 N.A. / 43× objective
* Additional lower-power Bausch & Lomb objective marked 0.25 N.A.
* Objective with Oct. 13, 1925 patent marking
* 10× eyepiece/ocular
* Combination of the 10× eyepiece and 43× objective provides approximately 430× total magnificationThe October 13, 1925 patent marking is consistent with a Bausch & Lomb patent covering improvements to microscope objectives and parfocalization, further supporting the period of manufacture.ConditionThis microscope is approximately 100 years old and remains in unrestored vintage condition.It displays attractive age-related patina throughout, including oxidation, finish loss, scratches, discoloration, dust, surface wear and other evidence of its long history as a scientific instrument. The brass/copper-colored components retain considerable original aged finish.The microscope has intentionally NOT been polished or cosmetically restored.The objective lenses and eyepiece are present as photographed. Moving components and adjustments are also shown in the photographs.Because this is an antique scientific instrument and has not been professionally serviced, calibrated or optically evaluated, it is being sold primarily as a vintage collectible. No guarantee is made regarding laboratory accuracy, optical performance or calibration.Please examine all photographs carefully. They are considered an important part of the description and show the microscope’s actual condition, markings, optics and components.This would make an outstanding addition to a collection of antique microscopes, scientific instruments, medical equipment, laboratory equipment, Bausch & Lomb memorabilia, optical instruments or early American industrial/scientific history.Manufacturer: Bausch & Lomb Optical Co.
Location: Rochester, New York, U.S.A.
Serial Number: 192049
Approximate Date: 1926–1927
Type: Compound Monocular Microscope
Eyepiece: 10×
Objective: Bausch & Lomb 4 mm / 0.65 N.A. / 43× plus additional period objective(s) as photographed
Condition: Antique / unrestored / sold as pictured
