Looking for Tach Glass - '39 BL-65

[Jaycor]

Looking for tach glass for our '39 BL. Has oil and temp embedded. It was in one piece until it was removed Can we cross reference it to an automotive glass?
Thank in advance

[3Dreaming]

30 years ago I replaced the one in my BL with one from a clock repair company.

[Jaycor]

I didn't think of that . We'll have to take measurements next time we're out there.

[3Dreaming]

I think it is 6", but that is from a 30 year old memory.