Hand Tachometer

DLSPH Collection · Public Health

Accession Number: 2016.phlt.1.102.1-8

Description:

A black box with a blue velvet lining contains a black instrument. The instrument has a large glass-fronted dial on its surface indicating rotations per minute. There are six other small objects within the case. These are spindles and tips to bring the tachometer into contact with a rotating shaft.

Primary Materials: Steel, Rubber, Glass

Markings:

The instrument has a serial number embossed on its back surface. “88247”

It has the letters “PHYS HYG” inscribed onto its back surface.

Dimensions (cm):

Box: Length = 10, Width = 12.7, Height = 17.5.

Function:

This instrument measures rotational speed.

Condition:

Very Good: The surfaces of the instrument and case are slightly worn.

Manufacturer:

Boulin Instrument Corporation. New York, New York.