Ammeter

Technical Information

Catalogue No: C0853
Category: General Purpose
Object Type: Test Equipment
Object Name: Ammeter
Part No: Moving Coil
Serial No: 678439
Manufacturer: Elliott Bros
Division: Unknown
Platform(s):
Year of Manufacture: 1959
Dimensions:
Width (mm):
Height (mm):
Depth (mm):
Weight (g):
Location: Archive Object Store
Inscription(s):

Portable Standard Ammeter

Notes:

Made by Elliott Bros (London) Limited at Century Works, Lewisham, London SE13.

The label reads:
"This instrument is calibrated in Absolute Amperes. It is correct at 20°C.
Certified to be in accordance with the B.S. Specification No. 89, Grade Precision.
Accuracy: 0.5% of maximum scale value.
Resistance of Instrument: 15.5 ohms
Range +/-
Use shunt.
Resistance of Leads: 0.05 ohms."

The scale is marked for the range ±150 (presumably 'amperes' when used with the correct shunt resistance)

The instrument was calibrated on 29/9/1959.

Click to enlarge Click to enlarge Click to enlarge