Here is an antique Chatillon's brass balance spring scale No. 2, patented Jan 6, 1891 and Jan 26, 1892. It is marked from 0-50, I believe the increments are in pounds. The brass face needs to be polished and has minor dents in a few places. Total length with top ring and hook below is 9 1/2." The actual scale is 5 1/2" x 1 5/8." The black painted back, the top ring, and bottom hook are iron.
Chatillon's Balance No. 2 Brass Hanging Spring Scale Pat'd 1892