[Belrond]

Hi SPCh

Further Contribution:
Universal AVOMETER Model 8 Mk3 serial No.8xxxx. 568 (May, 1968?)
casing - modern plastic

from a collegue at work as noted before
A Heavy Duty AVO HD6 Serial No. 0xxxxx4DE 5/84 (May, 1984?)
Scale Range DC 750 - 1.5V. Amps 15A - 75mA.
AC 750V - 3V. Amps 15A - 1.5A
Ohms 0 - 75. at x1 and x100

Yours John