Get one at a junk yard(or whatever they're called there). The filled thermal system moves the pointer. Attach it to the dial. The dial is either graduated in F or C. The pointer could care less. It moves to the same spot at 212F and 100C. Same one was used on 220SEs, 250SEs, etc in the 50s and 60s. Or you can send me a mere $1200 plus shipping. Wow, at that price I'll deliver. Welcome----