Weight Of 20 Gram Originating From Wooden Box In The Background. Weight In Gram Is Engraved On The Surface Of The Object. Set Of Old Small Copper Weights In A Wooden Box , Used For Physics Experiments.

KEYWORDS

abstract accurate ancient antique arrangement background balance box brown calibration class classic classroom closeup collection concept copper demonstration design equipment experiment gold gram handy indoors industrial isolated kilogram load mass measure metal obsolete old physics retro rustic rusty school science scratch set shiny small traditional unit used vintage weight wooden