Attention machinist:
Can you make a simple knife edge beam scale similar to this diagram? Two separate pieces: a knife edge fulcrum on a reasonably heavy metal base, and sort of an A-frame balance beam, I am guessing ~ 6 in. long and about 3/4 in wide. On the underside of one end of the beam a counter balance weight to offset the weight on the other end of a small block with a threaded bolt with a knurled head going through it. The size and weight of the bolt should be so that it can be turned with the fingers and can be screwed in or out to "zero" the balance of the beam. The top of the beam doesn't have to have a pans. Just countersink two shallow "cups" into the beam, one on each end, centered and precisely the same distance from the knife edge of the fulcrum. Each should be a bit larger than the size of a .22 ga pellet, but machined so that a pellet set in the cup would center precisely in the cup. Then, by zeroing the beam with the adjustment screw, and consistently using the same reference pellet on one end of the balance, you could compare the weight of another pellet on the other end, and quickly sort out those that are obviously heavier, about the same weight or obviously lighter than the reference pellet. Send me a PM and let me know. Thanks.
