The digital LCD economy vacuum gauge indicates air and moisture have been removed from the system. Track down the 14 level bargraph from atmosphere to 25 microns to know that the system is clean and the vacuum pump is performing properly. Packaged complete with 9 V alkaline battery and hanging hook.

• Unique thermal conductivity sensor automatically compensates for temperature with no calibration
• Simple on/off controls
• Easy to clean sensor handles 450 psi positive pressure
• Rugged construction with tough ABS housing and solid state circuitry for accuracy
• Automatic battery saver shuts gauge-off after 20 min with no reading changes
• Low battery indicator
• Calibration standards traceable to the national institute of standards and technology (NIST)
• Patented technology
• Made in USA

• Catalog https://www.plumbers-supply-co.com//ASSETS/DOCUMENTS/ITEMS/EN/UNI-PS22696_Cat.pdf