General Information

Serial #

1831

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Wood casing/ Metal interior control panel, controls, instrument, case hardware/ Synthetic dial and dial window, controls, synthetic covered cords/ Rubber? feet

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

23.3 cm

Width

23.0 cm

Height

20.5 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Medical Technology

Category

Instruments

Sub-Category

N/A

Manufacturer

AKA

Mueller

Country

United States of America

State/Province

Illinois

City

Chicago

Context

Country

Canada

State/Province

Ontario

Period

Possibly mid 20th century.

Canada

This instrument came to the CSTM from the Ottawa Hospital, Civic Campus. The biomed engineering technologist who arranged for its transfer to the museum had never seen it used despite being at the hospital since 1970.

Function

An instrument used to measure pressure with the eye (introcular) and thus measure the distortion of the cornea which affects visual acuity and indicates early signs of glaucoma.

Technical

An example of an electronic tonometer.

Area Notes

Unknown

Details

Markings

Black and solver plate on casing front reads 'V. MUELLER & CO./ CHICAGO/ TYPE B NO. 1831/ VOLT 115 A.C. AMP. .4 CYC. 60'/ Black lettering on interior dial reads 'ELECTRONIC/ TONOMETER/ V. MUELLER & CO.', with scale for 0 to 15

Missing

Synthetic covering on one switch

Finish

Casing stained brown and coated/ Glossy brown painted interior control panel/ Brushed metal instrument with black synthetic cord/ Black synthetic dial casing with colourless transparent window/ Black synthetic controls/ Plated switches and case hardware/ Black feet and power cord covering

Decoration

Grey metallic edging and divisions on control panel