Does anyone know what an Edison 46TS spark plug would fit? 18mm. 1" hex
Those I don't know. But I am still looking for some Edison 13s to match into a set. They fit a T.
Drive carefully, and enjoy, W2
18 mm plugs fit just about every other old engine that DIDN'T use pipe thread plugs.
Many industrial engines used them into the 50's at least.
These plugs(4) are new, still in excellent boxes and wrapped in the paper. Bought them about 30yrs ago.