Thanks for your advice everybody.
Yes, I had set everything to zero first.
Before I bought this scale I was using a borrowed old Redding scale with the oil damper that I didn't like and went to the gun show looking for a good used scale.
I'm a 58-year-old grampa with lots of shooting experience, but yes, I'm a newb at this. I've loaded lots with a friend with his gear, but I also have been doing a bit with little Lee Loader kits and thought that the addition of a scale would be a good idea. The scale appears to be identical to any I find pictures of with Google images.
Photo of how it looks without the powder tray in place. Note how the beam is all the way down at the left.
When I add the powder tray the beam tips up.
Settings are at zero.