Case: We have:
SS304,
Mild steel
Brass,
Aluminum,
ABS etc case for
dry and liquid fillabe gauges

Movement: We have:
Stainless steel movement
Brass movement
Heavy silicone lubed movement
Capsule gauge movement
Plastic movement

Tube: We have
bronze copper tube,
brass tube,
stainless steel tube
in C shape, coiled shape or spiral shape

Pointer: We have
Aluminum, steel, brass pointers
for fixed or adjustable use