Astraguage 75,000 psi pressure gauge made in the USA by Pressure Products. Superior quality, precision, and reliability - Accuracy: +/- 1% at 10,000-60,000 psi range. NIST traceable - Easy to read 6 inch diameter dial. The gauge has a standard HF4 high pressure port for connecting to a 1/4" diameter coned tubing using a 9/16" threaded 5/8 hex fitting (included for free upon request). Many high pressure connectors rated for 60,000 psi and higher have the same type of the connection (see HiP and Autoclave Engineers catalogs for more info).Feel free to ask any questions. 75,000 psi pressure gauge. Four spare 316 stainless steel balls for the Bourdon tube. Tech support by an engineer. The gauge's Bourdon tube is filled with distilled water. Let me know if you need it filled with another liquid. The item "Astragauge high pressure gauge 75000 550 MPa 75,000 psi calibrated warranty" is in sale since Tuesday, May 1, 2018. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical & Lab Equipment, Devices\Other Medical & Lab Equipment". The seller is "science_geeks" and is located in Ballwin, Missouri. This item can be shipped worldwide.