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Patient scales typically including a weighing platform that is large enough and low enough for wheelchair access; they may also include ramps to facilitate rolling the scales on and off the platform. Wheelchair scales usually have a weighing capacity of up to 275 to 450 kg (600 to 1,000 lb) and an accuracy of 100 g (0.25 lb). These scales may use mechanical, electromechanical, or electronic weighing technologies. Wheelchair scales are used for routine periodic weighing of patients who cannot stand on a conventional scale.
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