Tar Thermometer

1973/031

Mercury-in-glass tar thermometer

SKU: 1973/031 Categories: ,

Description

Mercury-in-glass tar thermometer calibrated from 60 to 200 degrees in a cylindrical casing with flaw holes at the lower end. The glass tube is broken below the index plate. Ring handle at top.

Used for measuring the temperature of tar during the laying process.

A.H. Baird in 1891-92 advertised themselves as a maker of “Apparatus to Special Designs in wood or metal” and gave their address as Science Materials Depot, 15 Lothian Street, Edinburgh (http://www.edinphoto.org.uk/pd/pd_baird_1891.htm.).

Additional information

Acquisition Number

1973/031

Item Type

Short Description

Tar thermometer

Manufactured by

Date of Manufacture

c. 1920

Sub-items

None

Supporting Items

None

Makers Number

None

Marks

Scale marked "A.H. BAIRD EDINBURGH"

Dimensions (mm)

1470 (L)

Donor

Date Donated

March 1973

Materials

Metal and glass

Condition

Damaged (glass tube broken below the index plate)

Display Location