OK all you technical types, here is a odd ball question.
Is there a standard depth calibration for depth guages? Are they calibrated to read accurately in fresh water, sea water, something else, or is it whatever each manufacturer decides?
My reference book says seawater is 3.5 percent heavier than pure water, previous threads reference 2.5 per cent. Either way, a guage calibrated for sea water will read 100 ft at 100 ft in the ocean. If you were in fresh water and that guage read 100 ft, you would really be in 103 ft. Since this affects a pb, I'm real interested.
Thanks for your help
Connor
Is there a standard depth calibration for depth guages? Are they calibrated to read accurately in fresh water, sea water, something else, or is it whatever each manufacturer decides?
My reference book says seawater is 3.5 percent heavier than pure water, previous threads reference 2.5 per cent. Either way, a guage calibrated for sea water will read 100 ft at 100 ft in the ocean. If you were in fresh water and that guage read 100 ft, you would really be in 103 ft. Since this affects a pb, I'm real interested.
Thanks for your help
Connor