Anyone used one of these before? A friend of mine is willing to practically give it away, but I have never used it and don't know anything about it's accuracy. I think it is Palm-Pilot based.
Thanks in advance.
-Brad
Just a little confused about the requirements for a PRV on Anhydrous Ammonia bottles. These are relatively small bottles (150 lb) and are marked with DOT numbers.
ANSI K61.1 says that PRV's are not required when the bottle holds less than 165 lbs.
However, 49 CFR Ch.1, Section 178 says that...