Micrometer

2019/058

Watts’ SF80-1 parallel plate micrometer

SKU: 2019/058 Categories: ,

Description

Watts’ SF80-1 parallel plate micrometer in green enameled aluminium. Leather case and strap.

A micrometer is used to improve the accuracy of level reading. This micrometer can be attached to the object lens end of a level and secured in position with the top locking screw (see images 1 and 2). By turning the micrometer knob the internal parallel-sided glass plate is tilted, thereby causing the line of sight to be raised or lowered. The range of displacement is 10 mm.

Additional information

Acquisition Number

2019/058

Item Type

Short Description

Watts' SF80-1 parallel plate micrometer

Manufactured by

Date of Manufacture

c. 1965

Sub-items

Leather case with strap

Supporting Items

None

Makers Number

265933

Marks

"P.P.GEOG" in red enamel paint and "PPM4" on black Dymo tape.

Dimensions (mm)

80 x 69 (dia)

Donor

Date Donated

August 2019

Materials

Aluminium and glass

Condition

Good

Display Location