Digital scales use the strain gauge load cell to convert the force of a given weight to an electric signal. Unlike analog scales, digital ones give weights as an instant digital readout. More »

Bathroom scales utilize a series of levers to distribute weight evenly while placing tension on a spring connected to a dial. The spring is calibrated so that it elongates under force, turning the attached dial until it ... More »

To accurately calibrate a digital bathroom scale, set it on a flat surface and use one foot to press on the top of it. Remove your foot when zeros or dashes appear, and once it turns off, the scale is calibrated. The pro... More »

Digital thermometers work on the principle that changes in temperature cause the resistance of a sensor to change allowing a computer to convert the difference to a digital read-out. The sensor is a thermoresistor, commo... More »

Spring scales measure the magnitude of forces, most commonly weight, which is the downward force of gravity on an object. It works from the principle laid down by Isaac Newton in his third law of universal motion, that f... More »

Digital television uses a digital signal that is sent from a digital channel. This signal is condensed into a single program or multiple subchannels to allow for multibroadcasting of different programs. Digital televisio... More »

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Balance scales work by placing items of equal mass onto two hanging pans, according to Math Is Fun. In order to determine how much a single object weighs, a standard weight is placed in one pan and the object of unknown ... More »