Super-Dry Systems 320-100 HGT 1/4 - Humidity Temperature Gauge Carbon Steel 1-5/8" 

1-5/8" 

and press the lever down

Benefits of the in-Tech Series include:

you create your own Dovetail Tracks anywhere you wish

GuidePRO Base is detachable and doubles as a measuring and squaring tool for setting the fence

Super-Dry Systems 320-100 HGT 1/4 - Humidity Temperature Gauge Carbon Steel 1-5/8" The HGT Series Humidity Gauge enables you to determine the level of cartridge saturation inside a D Series Compressed Air Dryer. The reading of moisture establishes the optimum moment for maintenance. The HGT reading accuracy can fluctuate based on environment and seasonality. It is not a substitute for a dew point monitor. Specifications NPT: 1 4" R. H.: 10 80 % TEMP: 20 100 F WEIGHT: 3 LBS