Microscope

IHPST

Accession Number: 2019.ihpst.68

Description:

A copper-coloured microscope. The microscope sits on a horseshoe-like base with two longer front elements and one shorter rear one.

The microscope has mounts for three objective lenses, three of which are mounted. These are:
– 1 x Bausch & Lomb Optical Co. lens marked as : “1/6 P.85 N. A. Tube Length 160.0 mm”
– 1 x Bausch & Lomb Optical Co. lens marked as : “2/3 0.24 N. A Tube Length 160.0 mm”
– 1 x Bausch & Lomb Optical Co. lens marked as : “Oil 1mm 1/12 [… the remaining text is not legible]”

The microscope has one ocular lens marked “12.5”. It has a condenser with two adjustable apertures under which a mirror is mounted on a swinging arm.
The microscope has a square stage with two slide clips.

It has a circular stage with an integral slide-carrier.

Primary Materials: Copper alloy, Glass.

Markings:

One branch of the microscope’s foot is marked: “Bausch & Lomb Optical Co. Rochester, N. Y.” This text is repeated on the top of the turret.

One branch of the microscope’s foot is marked;” Chandler & Massey Limited, Toronto & Montreal”

A raised disk on the rear of the microscope’s foot is marked: “37540”

Dimensions (cm): Height = 32.5, Width = 11, Length = 15.

Function:

This instrument magnifies objects too small to be seen with the naked eye.

Condition:

Good: This instrument is superficially worn across its surfaces, but appears functional. All optical elements are in place. Both the coarse and fine focusing mechanisms appear functional. There is a patch of heavy wear on the left of the microscope stage. The varnish on the brass surface is cracked and worn over the entire instrument.

Associated Instruments: 2019.ihpst.67, 2019.ihpst.69.1-3

Manufacturer:

Bausch & Lomb Optical Co. Rochester, N. Y.

Date of Manufacture: Early 20th c.

Provenance:

This microscope was donated to the Institute for the History and Philosophy of Science and Technology by Dr. William (Bill) F Brien, MD, FRCPC on 26 April 2017. Dr. Brien was then finishing a lab position at the Hospital for Sick Children in Toronto.

This microscope belonged to his grandfather, James W. Brian, and was passed down to his father, Wilbert P. Brien. Both were medical graduates of the University of Toronto.

  • Donated to UTSIC