heheh
I just disassembled the old CNH temp gauge... there's no lenses or filters in the dang thing at all. Just a cavity that the bulb goes into. I reckon they just ~hoped~ light would bounce around on the inside enough to make it to the gauge face. It also looks like they painted the inside body of the gauge a sort of O.R. scrubs shade of green, to tint the light I reckon. Mean while, the backside of the face dish (2 layer face) is white, and the top edge of the face dish dish is white as well. The back side of the top layer is painted the same shade of O.R. Scrubs green that the inner body is painted.
I'm gonna guess that the incandescent look of the new gauge is because of white painted or unpainted brass surfaces inside.
hmmmmmmmm... I'm not too keen on disassembling my new gauge. I don't wanna screw up its calibration.
Ah well, the other upside to this gauge replacement was it gave me an excuse to clean the inside face and glass of the tack. No more foggy gauges! YAY! /bcforum/images/%%GRAEMLIN_URL%%/grin.gif