The best calipers made are mitutoyo.
I use a $30 pair of Amazon and they work fine.
I have an RCBS 505 scale. Balance beam scale. It's slow to use but very accurate probably within a tenth of a grain. I use it for calibrations and confirming electronic scales in case they have reading variations while they warm up. I don't use it when I have multiple charges to weigh.
I don't have a specific standalone electronic scale for weighing. I use an rcbs charge master lite to drop charges and it works fine. Depending on what powder I'm using it might overcharge or undercharge one out of 20 loads. If I bought another one I would probably read some reviews and get one that was just a little bit better. But you can absolutely get great loads with it. If it overthrows or under throws a load you know it.
In my years of reloading, the 3 things that gave me total Joy when I bought them were:
1. RCBS micrometer bullet seater.
Set screw type bullet seaters for a rifle are tedious you ever change bullets much.
2. RCBS chargemaster light
The balance beam was horribly slow and I hate trickling loads.
3. Garmin Zero.
Total game changer.
Mitutoyo calipers are high quality! I've had good luck with Lyman digital scales but last Christmas I bought an RCBS Chargemaster Supreme and am highly impressed with it's consistency. Take a look at some of the excellent video's from the Handloader Magazine on YouTube! https://www.youtube.com/channel/UCcn78bfFCKQnpBRqR4Ik0vg