I don't have access to a HS250h speedometer at the moment. Could someone please tell me the diameter of the two circular gauge groups (outer edge of tick marks) and the spacing between their centers.

Many thanks!

Bill the Engineer

 

5" Diameter

6 1/2" between centers

This should get you close because keep in mind that the gauges sit about 2 or 3 inches below the plexiglass cover.

 

Perfect.
Thank you!

Bill the Engineer