29.92 inches of mercury (from memory, I didn't look it up, so don't hold me to it).. For water 14.7/(62.4/144) = 33.92 feet, more or less Jim John Pearson wrote: > Isn't it 32 'inches' of water, or is it inches of mercury? > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu