Millivolt (mV) DC Source

Description

Millivolt (mV) DC Source
As you may know, a meter calibrator could cost thousands.  This handmade device may be perfect for a hobbyist who owns hard to find analogue meters.
Why should I use a millivolt dc source when testing analogue panel meters?
Think about when you are given a hard to find and sensitive analogue panel meter of unknown condition, how you can test it safely (coil resistance and current) without frying the delicate meter movement?  If you are going to use a DMM or a traditional VOM to do the job, STOP and think again because these instruments can burn the moving coil like blowing a fuse, the damage can be costly.  This gadget simplifies your work, for fast, accurate and consistent test results while protecting your delicate analogue panel meter.
Specifications:
= mV output range: LOW 37 – 140mV;
HIGH 180 – 660mV
= LED battery strength test
= Operates on a 9 volt battery (not included to avoid possible shipping restrictions)
You may want to get the
Microampere (uA) DC Source
to benefit from combined shipping, please refer to separate listing on eBay.
Picture shows the
Millivolt (mV) DC Source
in operation, please note that the Fluke DMM and the meter under test are not included in this auction.
Ship by air from Hong Kong is very affordable worldwide ( for this unit), I charge actual postage with no handling fees, happy to combine shipping.