This portable scale from Cardinal Detecto (model 854f100p) is part of the company's "weighbeam" series of scales, meaning it is a mechanical scale that requires no outside power source for operation. Thanks to this lack of any electrical supply, this scale is especially appropriate for hazardous weighing tasks, such as weighing propane tanks, or other flammable materials. Supremely portable on tough, easy-rolling 5-inch wheels made of synthetic rubber, this beam scale is relatively lightweight (116 lbs / 53 kg) and thus is an ideal choice if you need a scale for use in multiple locations. The scale is sturdily constructed of welded steel and has an electrostatic powder paint finish. N.T.E.P. certified and legal for trade, the scale can be specified to weigh in the metric or avoirdupois system or a combination of both. The die-cast beam measurements can be read from both sides of the beam. A great all-purpose mechanical scale for use agriculture, warehousing, receiving or general commercial weighing tasks.