>Are you sure about that? I think you have it backwards. 13.6 inches of water >is equal to 1 inch of mercury. (I had my numbers wrong, sorry.) One inch of >mercury is 3.4 kPa (kilopascals.) Most automotive gauges work in inches of >mercury (Hg.) I have some 0-30" of water gauges for exactly this purpose >(syncing CrossFire TBI's.) > >Ken > OOPS--backwards I was--- Greg