Merit's PPX Shock-X™ Series gauge offers our vibration-free movement in a 4.5" dial solid-front, blow-out back safety case - with laminated safety glass standard. Designed for applications where a liquid filled gauge is either not required or not desired, but vibration protection is required in a solid-front safety case. 316L stainless steel internals, 0.5% FSA and a laminated safety glass lens complete the package.