Megger AVO410 digital multimeter.

CAT IV 600 V safety rating. Suitable for industrial applications.

6000 count backlit digital display
True RMS reading on AC mode
1000 V DC / 750 V AC ranges
10 A AC / DC ranges
Resistance, frequency and capacitance ranges

Auto-ranging
When first selected, all functions are auto-ranging. A range button on the AVO410 allows multiple manual range selection on each function; a feature that is generally welcomed by many users.

Continuity / diode testing
The continuity function features a buzzer and provides the user both optical and audio indication of identifying and confirming continuity between two points. This function also allows forward and reverse bias testing of diode and semiconductor junctions.

These cost at least £186 see pictures of others advertising this on e-bay and Amazon.

Only selling as this was bought as a back up, in case needed, but my work is pretty much 100% mechanical and so the need to use this has never arose.

I have loaded a Youtube video giving a demonstration.

https://youtu.be/JKOnj6PFd7A