The VB69045 is a mechanical vacuum gauge with a diameter of 80 mm.
Measuring range 1000-0 millibar/30-0 inch.
It is suitable for system installations and uses a Bourdon tube type of meter.
It has a 1/8" male connection for bottom mounting.
Note that vacuum gauges should be handled with care to ensure maximum service life.
Drops, pressure loads and rough handling reduce their lifespan.