Antique armature tester

[hatzie]

They used to call those things Growlers and they all pretty much work in a very similar manner

https://youtu.be/fpbyDBLrlhs?si=qKFWTfXaRPfPxzj9

[Steve6911]

I couldn't find anything doing a search, however there is one for sale on Ebay. Maybe contact the seller and see if he has the manual and would be willing to copy it for you

[beesbo]

I am the proud owner of a Snap On MT-320A armature tester for the old generators/starters. I would like to find the owners manual for it. If anybody knows where I might find a manual, even a copy, I would greatly appreciate it.
Thanks
Bill