|Object Type:||Test Equipment|
|Part No:||Moving Coil|
|Year of Manufacture:||1959|
|Location:||Archive Object Store|
Portable Standard Ammeter
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
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.