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MSI is best known in the rotary aviation industry for the design and manufacture of helicopter cargo hook load monitoring equipment. The company is recognized as the primary, and often the only, source for these unique systems. The MSI-150 Sky-Weigh is composed of a specially designed load sensor that interfaces directly with your aircraft's cargo hook. Via an interface cable, a panel-mounted digital indicator continuously displays the load weight slung to the cargo hook. The Sky-Weigh eliminates guesswork of unknown loads to provide safety and efficiency.