#balance scale

“Weights Of The Light,” Jay Kim Design

Apothecary scale, mid 19th century. This device would be used by a doctor to weigh medicine. The tiny square brass weights (in the plastic envelope) were put in one pan and the ingredients weighed against it in the opposite pan. A metal needle at the top indicated if the scales were perfectly balanced. The lid of the metal case (painted orange inside) has an American eagle and shield. The doctor who used this set was a Union surgeon.

A portable multi-parameter colorimeter is a versatile device used to measure various water quality parameters quickly and accurately. These colorimeters are invaluable tools for environmental monitoring, water treatment, wastewater management, and field research.

Kids are curious about how things work. This balance scale activity is a great activity to introduce scientific, mathematical, and engineering concepts. This toy encourages kids to observe the physical properties of each object, and measure the mass of each object with a non-standard unit. Fun and educational balances.

Incredible Dr. Oetker 500g balance scale ("balkenwaage")! Bright blue, good as new, made in West Germany. $20.