Thank you for viewing my item!     Available is a vintage US Guage American LaFrance pressure Compound Guage.    It measures approximately 4 1/8" diameter.    It is for the model 3 1/2AD-4566 400 psi guage.    The item does have some physical wear, so please look at the pictures for an idea of the overall condition.    The item has not been tested so is being sold as is.    Shipping will be $10 in the US.    Outside the US will be through the global shipping program.