speedometer diameters 80mm or 85mm ??????

[cornishbob]

stoopid question.
so my speedo is showing its age. in a previous life it suffered a catastrophic cut to the outer bezel so it has sprung out and screw back on and stay.

speedo body is 80 ish mm
the glass is 75 / 76 ish mm
the inner ring has an O.D. of around 78 / 79 ish mm
the outer cut bezel is approx 85mm taking into account the cut

ALL MEASUREMENTS WERE TAKEN IN THE DARK WITHOUT READING GLASSES SO ERRORS AND OMMISIONS WILL BE TAKEN INTO CONSIDERATION

so heres where i get dizzy
there seems to be 2 sizes ...80mm and 85mm

is the measurement i need the bezel O.D. (85mm)  or the body diameter (80mm) when i get a replacement?

[iansoady]

Possibly different advertisers use either the body or bezel diameter? It would be worth asking them.

[V500]

Good point. I've only ever seen the one size Chrono bezel.

[cornishbob]

well there it is. 80mm and 85mm and now 82mm are all the same depending on where you take you measurement from.

body OD or bezel OD or if its 82mm its the OD of the thread on the body for the bezel to screw on. suicide is a better option