Mitutoyo Height Micrometers, also known as "Height Masters" are on sale at Gaging.com!  This type of instrument is often used to test height gages for accuracy, set a test indicator to a known height while mounted on a transfer stand, or even set a cylinder bore gage (with the proper accessories).  A gage that has truly stood the test of time, height micrometers are a useful, symbol of quality and accuracy in any Metrology lab!