Have you ever wondered just how much load a sheet is under when sailing in breeze? I sure have; Spinlock's Load Cell is a mobile device with a digital readout that is quick and easy to confirm how much load is put on the module. Use either a continuous read or a "peak load" mode to catch the load at its highest. This model is rated up to 10 tonnes (about 11 standard tons). This allows any sailor to figure out just what type of line is best for the job.