Heathkit VOM model IM-105

by Mark WA3QVU
Published: November 5, 2020 (4 weeks ago)
$50.00

Heathkit solid state Volt Ohm Meter model IM-105.  This is a working meter that is fairly accurate for it’s age. I purchased a new 15v battery, Exell 411 or NEDA 208 ($21.15) . Sold with manual and case.

First I used a 1000 ohm precision resistor, it measures a thousand ohms on the x1, x10, x100 and 1k scales. Next I  set the meter on the 250v AC scale and pushed the test leads into a 120v socket. The meter reads very close to 120v.

The last pic shows the off position – no battery drain.  Incidentally, the meter itself is made by Weston.

This is sold as a collectors item, add to your Heathkit collection.  It is not intended as a working unit for everyday use.

W3AEH estate  — 10 percent to the club.

Author: WA3QVU

PWA member since 2006. Field Day chairman 2014, 15, 16 and co-chair with Rich Finger (KB3TXF) in 2013. Holiday luncheon chairman 2016.