Bausch & Lomb Optical Co., Rochester N.Y. U.S.A.

Serial number 162120, c. 1923

The No. 40 Model Pocket Microscope

Bausch & Lomb Optical Co., Rochester N.Y. U.S.A., #162120, c. 1923. The No. 40 Model Pocket Microscope

 

Bausch & Lomb Optical Co., Rochester N.Y. U.S.A., #162120, c. 1923. The No. 40 Model Pocket Microscope

Bausch & Lomb Optical Co., Rochester N.Y. U.S.A., #162120, c. 1923. The No. 40 Model Pocket Microscope

Bausch & Lomb Optical Co., Rochester N.Y. U.S.A., #162120, c. 1923. The No. 40 Model Pocket Microscope

    Note that the mirror can be mounted above the stage for illumination of opaque objects.

Bausch & Lomb Optical Co., Rochester N.Y. U.S.A., #162120, c. 1923. The No. 40 Model Pocket Microscope. folded.

Bausch & Lomb Optical Co., Rochester N.Y. U.S.A., #162120, c. 1923. The No. 40 Model Pocket Microscope. Fabric covered case.

Bausch & Lomb Optical Co., Rochester N.Y. U.S.A., #162120, c. 1923. The No. 40 Model Pocket Microscope stored in its case.

The microscope is constructed entirely of brass with the main body having a black enameled surface finish. The original lacquered brass B&L objective is divisible and is marked 8-16. Depending on the setting of the draw-tube and the lenses used with the objective, this microscope gives magnifications in the range 60-250. With the draw-tube fully extended as shown in the photos, the microscope measures abou 8.75-inches tall in the inclined position. The main focus is by push tube. The fine focus is accomplished by turning the knurled ring of the outer tube. The mirror is single sided with a concave glass; it can be mounted on an adjustable arm under the stage for conventional use or above the stage for use with opaque objects. The instrument collapses to a small size by pushing in the tubes and folding the legs. The microscope is is stored in a plush lined fabric-covered case bearing the B&L logo on the cover.

See: The Directions for Use of the Pocket Microscope No.40.

Home Page-Antique Microscopes       Site Index

www.antique-microscopes.com