I started reloading in 1964 with a Lyman Ammo-Maker kit (310 tool, casting pot, dipper, and mould). The caliber was .38 Special/.357 Magnum and my revolver was a Colt .357 that I bought used for $60. My next purchase was a can of Bullseye powder, 200 primers, and a Redding powder and bullet scale. I now reload 15 different cartridges from .25 ACP to .454 Casull. The 310 tool lasted about 1 year before I traded up to a Lyman Spar-T turret press.
However, I still use the original Redding balance beam 325 grain scale for all my reloading. It's still in the original box or out on my bench. When I got the scale I was a graduate student in chemistry and used some of the finest Mettler analytical balances. I used one of these to make a set of 5 check weights from lengths of copper wire. They weigh between 3.11 and 14.75 grains, which pretty much covered my powder weights at the time with Bullseye, Unique, and 2400. I use the check weights periodically and they are always spot on, which amazes me. I just used them and that's what prompted this thread.