Marshall Carbon Face  0-100psi. Shock proof, Vibration resistant, glycerin filled, 1 1/2 stainless steel case and besel 1/8in NPT

Liquid filled for vibration dampening.

Case OD: 1.6" (40mm)
Bezel OD: 1.75" (45mm)
1/8" NPT Center Back Connection
Rugged Stainless Steel Case
Brass Internals
Silicone Filled for Vibration Dampening
Acrylic Lens
Accuracy ANSI Grade 2% of span in the middle of the scale