Inline Pressure Gauge with 1/4 in. Press-in Tube Fittings - AndyMark, Inc
Liquidynamics 1/4 in. Filter/Regulator w/Gauge - John M. Ellsworth Co. Inc.
1/4 Inch Air Adjusting Regulator Valve with Pressure Gauge and Water Trap Filter, 2 Packs, Oil Separator Water Pressure Regulator Air Compressor Regulator for Air Spray Paint Gun Air Pressure Cleaner - Amazon.com
1/4” Spray Gun-Air Pressure Regulator with Pressure Gauge Practical Pneumatic Tool Adapter for Air Gun-Spray Gunand Tool - AliExpress
Dixon Wilkerson 1/4 in. R21 Dial Air Regulator With Gauge - John M. Ellsworth Co. Inc.
Air Pressure Regulator with Gauge Mini Air Control Valve 1/4-Inch NPT Thread for Air Compressor and Air Tools (0-145PSI) - Amazon.com
Norgren - Compressed Air Regulator: 1/4″ NPT, 300 Max psi, Hi-Flow - 01724657 - MSC Industrial Supply
PRO-SOURCE - Compressed Air Regulator: 1/4″ NPT, 120 Max psi, Dial Air - 74381435 - MSC Industrial Supply
Klutch Locking Air Pressure Gauge with Regulator 1/4in., 0–180 PSI | Northern Tool
1/4 in, NPT, Compressed Air Regulator - 4TH15|HARG-510 - Grainger
PORTER-CABLE Porter-cable Regulator with-Gauge 1/4 In. Npt in the Air Compressor Accessories department at Lowes.com
1/4" Air regulator pneumatic air pressure regulator gas regulator,pneumatic pressure regulator - AliExpress
Primefit 1/4 in. NPT Replacement Air Regulator with Steel-Protected Gauge CR1401G - The Home Depot