Original instrument made by Smiths Instruments, UK for the 1972 onwards XJ series cars. 

This was rescued from a clear-out from the test department at the factory and has been in storage since the late 1970s. It has never been fitted to a vehicle.

It's in good condition (see photos). The inside of the glass would benefit from being cleaned.

The gauge part number is BP 2233/00. 52mm diameter.

Tested and working. Calibration is correct for low, medium and high readings.

One of the cork seals over calibration holes is not in place.

No warranty is offered on this item. Security marked.