™ Model 7 MK II (1957)|
instrument is one of many manufactured during
the 1940's and 1950's by
Avo Limited, in Dover, England.
This one is from 1957and came with a brown
leather case but unfortunately no leads and just
one probe. The Avometer was the professional's
choice back in those days. The instrument is of
superb quality and much of it was hand made. The
manufactured date of this AVO meter can be seen
from the last 3 or 4 digits of the serial number
under the right hand end of the scale. These
define the month and year of manufacture. In
this case the serial number is No. 73328-A1057.
The last four digits 1057 shows that this one
was manufactured in October 1957.
the picture for photogallery
Avo Limited, Dover,
Avo was at the
time part of the Thorn Group.
AVO Ltd. used to be at
Avocet House, 92-96 Vauxhall Bridge Road,
London, SW1 and was a member of the Metal
Industries Group of companies. Though known for
their Avometer general purpose multimeter, they
made a wide range of test gear including valve
testers. The Acton Lane works closed down at
about that time - around 1986. The current range
of products can bee seen at:
http://www.avointl.com/ The firm now called
Megger Ltd is based at: Archcliffe Road, Dover,
Kent, CT17 9EN, United Kingdom.
1.0, 10, 100, 400, 1000; DC
10, 100, 400, 1000 ; AC
0.002, 0.01, 0.1, 1.0, 10; DC
0.01, 0.1, 1.0, 10; AC
OHMS: 10k, 100k, 1Meg
Capacitance: 0.05uF to 20 uF(useable
range) - requires external supply
Batteries: One 1.5 volt and two Ever Ready
4.5 volt batteries.
and circuit diagram
Click for Avo 7 manual (pdf
Other AVO sites