A homemade scale will not be as precise as an expensive digital scale, but it can give you a fairly accurate idea of the weight of a small object. It's easy to construct scales that measure the unknown weight of small items against the known weight of another item -- in this case, coins.
How To Make Homemade Weighing and Balance Scales (DIY), PDF, Weighing Scale
Cardboard Weighing Scale Weighing scale, Cardboard, Pen material
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DIY Weighing Scale ThinkTac
Weighing scale
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180 Flour Weighing Scale Stock Photos - Free & Royalty-Free Stock Photos from Dreamstime
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DIY Weighing Scale ThinkTac
Homemade weight lifting equipment.