The Roberval balance is a weighing scale with two horizontal beams one above the other connected to two vertical beams supporting the weights to be compared.
Because the beams form a parallelogram, no matter where the weight is placed in the plates the balance works properly, compared to a simple beam scale which is sensitive to where the weights are placed in the plate. See it in action at https://www.youtube.com/watch?v=Bg7IBTMdyf0
Use this tool to compare the weight of any two small objects! It shows differences as small as 1 gram.
See https://en.wikipedia.org/wiki/Roberval_balance for more historical and scientific information about the Roberval balance.
Base.stl | 8.5KB | |
Bottom_Bar.stl | 22.3KB | |
Plate.stl | 51.2KB | |
Plate_Holder.stl | 10.8KB | |
Plate_Sleeve.stl | 1.6KB | |
Riser.stl | 20.0KB | |
Roberval_Balance.stl | 193.3KB | |
Top_Bar.stl | 22.9KB |