Digital scales are great in 70 F and warmer weather. When temperatures get cold, the things will drift. So I still have my Redding scale for when it is cold. Gravity still works, hot or cold.
If you search on Amazon, Ohaus beam scales are still being listed.
I would look carefully at the graduations on the beam. The Ohaus 502 is like my Redding, where the graduations on the long part of the beam are in five grain increments. Thinking in base 5 has confused me in the past. The long beam is in 10 grain increments on the Ohaus 507.
Ohaus was the primary beam scale maker in the old days, the reloading companies simply purchased an Ohaus scale, had it painted their color, and added their label.