A question for you. When is a tablet not a tablet? When it’s a tray … plus a smartphone app. What we have here is the strangely named Grain Tablet: a 650x300mm plastic tray, placed or dropped in the path of a passing combine where it collects lost grain. But before expanding on that and its companion app, a little background.

Combine makers provide loss monitor(s) but tend to leave monitor calibration to the operator. German company Feiffer Consult has produced simple calibration equipment for decades, and last summer we tried its slightly more complex offering