Dial:
2.5” (63mm), 4” (100mm), 4.5” (115mm) and 6” (150mm), white aluminum with black and red markings
Case:
2.5” (63mm), 4” (100mm): AISI 304 SS, 4.5” (115mm), 6” (150mm): Aluminum, painted black
Lens :
2.5” (63mm): Polycarbonate 4” (100mm): Styrene-acrylonitrile resin 4.5” (115mm), 6” (150mm): Glass
Ring :
2.5” (63mm), 4” (100mm): No ring 4.5” (115mm), 6” (150mm): Aluminum