Mahr Federal W-37778 Dial Indicator Q31-RHT 1 Rev .005mm NOS 1 Per Order.  There are 2 available, 1 Per Order.  Both are in NOS condition and function smoothly.  The travel is very short, looks about 1.25mm.  Dial face is approximately 2 3/8" with an overall diameter of approximately 2 3/4".  Please review all photos to determine condition and identification.  Item is sold as is with No Returns.  Will be shipped via USPS Priority.