I demonstrate the DMMCheck and PentaRef from VoltageStandard (www.voltagestandard.com).
These are Low cost Voltage References and multimeter checks for voltage, current and resistance.
I then run through some tests to compare the accuracy of the following multimeters:
Brymen TBM867 / BM867
Major Tech MT1887 / Extech EX530
Major Tech MT22
I also introduce the Fluke 87 V which I will review soon.
A list of my multimeters can be purchased here: