Menu Close

Pocket Barometer and Altimeter

Jowlabar · Chemical Engineering

A round instrument with a magnifying lens that can be positioned along the instrument’s circular scale. The instrument has a black metal housing and a silver engraved face under a glass cover. A black needle provides a reading along a circular dial. The scale is in metric.

Accession Number: 2017.che.84

Alternative Name:

Primary Materials: Metal, Glass.


The engraving on the front face includes the following number: “4 4032”.

Dimensions (cm): Height= 4.5, Width = 10, Length = 11.5.


This instrument is used to measure air pressure and altitude.


Good: The finish on the instrument is chipped and abraded in place. Small patches of silver paint on the instrument’s face is missing of lifted.

Associated Instruments:

Manufacturer: Angelo Salmoiraghi (1848 – 1939).

Date of Manufacture: Early 20th c.


This artifact was donated by Professor Paul Jowlabar of the University of Toronto Department of Chemical Engineering and Applied Chemistry. It was acquired by the UTSIC project on December 4, 2017.

Professor Jowlabar acquired a substantial of historical artifacts from his department by saving important items from disposal. He donated his collection to the Institute for the History and Philosophy of Science and Technology (IHPST) in 2017.

Additional Information and References:

Historical Notes:


  • Donated to UTSIC