Need an inexpensive weight scale
#2
Tech Champion
Try food scales. There are many options that are fairly inexpensive that should be a good start.
#5
Tech Elite
iTrader: (71)
Not sure what qualifies as inexpensive for you, but this one will handle up to 6.6 lbs/3 kg. It use it to weigh my 1/10 stuff. A 1/8 car will probably be just a bit too much for it.
http://www.amazon.com/Taylor-Digital.../dp/B00NE6DRXE
http://www.amazon.com/Taylor-Digital.../dp/B00NE6DRXE
#7
Standard kitchen scales go up to 5kg with 1 gram steps. You can get them for 10 up to 20 bucks.