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Omega engineering high accuracy vacuum test gauge

This is an Omega Engineering high accuracy test gauge with a range of 0 to 30 inches Hg vacuum.
* Omega high accuracy test gauge
* range is 0 to 30 inches Hg vacuum
* nominal 6" dial (actual inside diameter of window is 5.75")
* mirror ring to eliminate parallax error when taking readings
(Click on thumbnails below to view larger, higher quality images.)
The seller does not have calibration equipment to fully qualify such a gauge, but he did test it to the extent of first using the scale adjustment knob to zero the gauge at atmospheric pressure, then evacuating it to a pressure of approximately 50 milliTorr (microns) - with the needle settling at a reading of 29.8-29.9 inches Hg.
Questions? Please ask. Thanks for looking!