Now that the scale is balanced how do you know how much something weighs? According to the U.S. Mint all modern U.S. nickels weigh exactly 5 grams...
This is my first instructable. The reason I made this scale is that I am a photographer and I mix my own developers using household compounds like instant coffee ( Caffinol---a future instructable) and I need to measure quantities as small as .5 grams. The electronic kitchen scales are not accurate down to that level, so I decided to see if I could make a balance scale that would do the job.
Step 1: Materials and Tools
You will need a plastic ruler, 2 old scratched CDs (new would do but why waste them), 6 6" fishing leaders with snap ends, 2 small pieces of plywood, long finish nails and some wood screws. You will also need a drill with an assortment of bits, a pencil and a US Nickel.