Abstract: An agricultural machine includes a metering system comprising one or more meters configured to meter particulate material into a first material distribution line and a second material distribution line, a first sensor configured to generate a first sensor signal indicative of a first measure of a flow of the particulate material in the first material distribution line, a second sensor configured to generate a second sensor signal indicative of a second measure of the flow of the particulate material in the first material distribution line, and a control system. The control system is configured to receive an indication of a sensed flow rate of the particulate material in the second material distribution line, obtain an adjusted flow rate indication by applying, to the sensed flow rate, a rate offset based on the first and second sensor signals, and control the metering system based on the adjusted flow rate indication.

Abstract: A dressing tool for grinding wheels has a hard material insert preferably of syndite, with a cutting edge, projecting forwardly from a holder. Shoulders are formed adjacent the insert by the forward, flat face of the holder. The insert is chisel-shaped. The ratio of the length of the exposed part of the insert to the lateral width of each shoulder may be at least 1:4, and the two lengths may be substantially equal.