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Designed to take advantage of Hooke's law to determine the size of the force stretching the spring by measuring the displacement, a spring scale is one of the most basic tools used to measure the weight of an object. The spring scale converts this extension to measuring weight using an analog or digital gauge attached to the device.
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Precise, ultra-light, and handy Spring Scale with transparent tube and long, clear double display. Patented tare, zero-adjustment, and spring suspension technology. Free turning inner tube which neither influences reading nor tare. Tare screw with incremental rotation to avoid inadvertent adjustment.