Dial:

1 1/2" (40mm), 2 1/2" (63mm), 4" (100mm) with black and red markings

Case:

Brass

Lens:

Tempered Glass or Safety Glass

Ring:

316 stainless steel,

Pointer:

Aluminum, anodized black

Wetted Parts:

Brass

Connection:

1/8", 1/4", 1/2" NPT, bottom or back

Accuracy:

1 1/2" (40mm) = 3-2-3% ANSI/ASME
Grade B 2 1/2"(63mm), 4"(100mm) = 1.5%
ANSI/ASME Grade B

Fill:

Glycerin, Silicone, Fluorolube. Other fillings available 

Other:

Restrictor screw standard, available dry