Up for sale here is this used vintage Simpson panel meter, dated 1963 and Made in USA. This was removed from a HP/Boonton 230A signal generator. It is in good shape, with just light wear. This is guaranteed to work for you. Please see my pictures for details and measurements.
US shipping and handling is $6, and international is $28. If you have any questions, please ask.
I have more meters & gauges and other vintage electronics listed--feel free to take a look!