Smiths instruments

[Roger King]

Hi Andy,

Yes, that's the one, but as Russ has pointed out the part number will be wrong and you don't need 1/4 or 3/4 markings.
That is a.... healthy price, I'd say. Might be better trying AH Spares or similar to see if they'll sell one outright.

Don't forget, these won't work with an instrument voltage regulator. Full 12V up and down voltage only, hopelessly inaccurate but you get used to reading them.