Can anyone tell me if the small round rivets on the outside of the tach housing serve any purpose?  I am instaling one in my Healey BT7 and they stop the tach from fully inserting into the dash.  If they are non functional I will grind off and then insert.  The reason I wonder about them is that the tach works magnetically and I know on compasses there are small objects on the compass that work in conjunction with the compass to offset variation and deviation.
				
			
			
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Hi Guest!
							
 smilie in place of the real @
 Pretty Please - add it to our Events forum(s) and add to the calendar! >> 