LIVE STEAM 3/16-40 MINIATURE SYPHON GAUGE ~ 0 TO 100 PSIG - 3/4" DIAL 

This is a miniature syphon pressure gauge new from the factory.  The syphon on this unit is utilized to protect the gauge 
 from being exposed to steam during operation. It has a 3/4" dial.  The case is made of quality brass and glass materials

-Thanks for your interest-