I've been trained to use resistance as a circuit / continuity tester
Thanks for all the advice, chaps. Most helpful.
I've opted for the Draper as it has all the functions I'm familiar with, including a continuity buzzer. Also, I quite fancy a temperature probe as I don't already have such a device (other than my fingertip*).
* Works surprisingly well for distinguishing < and > 60C, as my chemistry lecturer often pointed out. But not so good on hot primaries.
An infrared thermometer for £25 or so is a good addition to the toolkit to measure primary temp, etc.
Do you think the Draper probe would do the job?
I would say this Draper IR thermometer would do it, better to use non-contact methods with the hotter components on a car, in my opinion: https://www.amazon.co.uk/Draper-15101-Infrared-Thermometer/dp/B01NAXHYTS
They sell these infrared thermometers in Lidl from time to time . Less than £20
Thanks, James. I'm treating the temp probe as a bonus feature. I'll see how good/bad it is, and then go for an IR device if needed.
I was looking at this one acouple of nights ago
£27 after club discount too.