ORIGINAL: rcjetsaok

Can't help you on the fish scale... If you figure a good one let us know !!!! I have a great test stand that slides on ball bearing rails, but the scale is a Walmart dial type... Not too accurate...
As far as the conversion deal, download this program and keep it on your desktop... Been useing it for years. Easy to use. You can convert anything !!!! Seconds to Light Years, Grams to Tons.... you name it !!!!!

http://wscope.com/convert.htm

Danno