Merit's PHDA Series Industrial Pressure Gauges are designed and manufactured for applications that require a rugged forged aluminum case, 1% FSA and other features which make these ideal gauges for challenging operating conditions. The PHDA Series gauges have a machined case made from forged aluminum, offering an integrated back flange and screw-on bezel for bottom connection models and a hinged-ring case also machined from forged aluminum for back connection models. Standard features include: threaded on front bezel for bottom connection gauges and a hinged-ring for back connection gauges to allow easy access to the dial and pointer for easy adjustments, a laminated safety glass lens (PC lenses are available) as standard, a micrometer adjustable pointer and integral back flange for all bottom connection gauges. Available in dial sizes from 4.5" (115mm), 6" (150mm) and 8.5" (215mm) and ranges from 30" Hg Vacuum up to 10,000 psi and each gauge comes with Merit's 7 year limited warranty against manufacturing defects* 
*see warranty details on our website.