I'm thinking of buying one of these lights from The Magneto Guys. They seem to have a good reputation. Has anyone used one of theirs?

I haven't used theirs but the last time I looked it didn't have the 'audible' feature (Beeper)....I find that feature most helpful and don't actually look at the indicator lights when setting the 'just opening' position for the contact breakers...Ian

email (option): ian@wright52.plus.com

Try AO services
Their device has a light & a buzzer to my knowledge
Back in the 60’s & 70’s this was a Honda dealer special tool / long discontinued
Br
Job

email (option): Jonnyob1atgooglemail.com

Thanks for these responses. I can see the point of an audible indicator.
I looked up AO Services & their device seems to be the same one the Magneto Guys sell, the AO instruction sheet has the Magneto Guys logo on the bottom. And there's no mention of a beeper.

Here is the one I use.

https://www.lasaero.com/products/article/P029YHTZP

I have a mate who is a light aircraft mechanic so borrow his when I need too.. Handy tool, but if you use the old fag paper method, bin the fag paper and use a slice of crisp packet, you can put tension on these without it tearing.....

If you look in Irving’s Tuning for Speed there’s an illustration of a torch bulb and battery being used to set mag timing. All very mid 20th century!