[simpits-tech] Standard aviation guage sizes for a Cessna 172?

[Freeman Pascal]

Does anyone know what the gauge sizes are for a Cessna 172?  I assume  
they are the same for all variations of the 172 - I could be wrong.

I'm looking for the inside diameter of the holes on the instrument  
panel used to house the standard gauges and engine gauges.  My cessna  
drawing shows 79mm for the larger gauges and 56.74mm for the engine  
gauges.

If I can confirm these I can let Gene have my drawings to cut out my  
panel (*drool*).


-Freeman