Vintage Metal Balance Scale With Box Primitive Farmhouse Decor Missing Pieces?

Description

Vintage Metal Balance Scale With Box Primitive Farmhouse Decor Missing Pieces? I tried my best to put the metal scale together, but not sure if I did it correctly, if it works properly, or if it is missing any pieces. This scale is used and has age and some corrosion spots. Please see photos for details and the pieces included, which includes original wooden black box. No international shipping.