A harvesting machine includes: a crop tank a measuring device that measures an amount of crop that has been stored in the crop tank an unloader apparatus that discharges crop that has been stored in the crop tank to an outside a device control part that executes precise measurement oriented device setting processing a measurement control part including a precise measurement execution part that performs, by the measuring device, precise measurement which involves the precise measurement oriented device setting processing, and a simplified measurement execution part that executes, by the measuring device, simplified measurement which does not involve the precise measurement oriented device setting processing an operational instruction processing part that outputs a precise measurement instruction and a simplified measurement instruction in response to an operation performed by using a manual operation device and aa measurement result recording part that, before the unloader apparatus performs crop discharging work, rewrites a simplified measurement result that has been recorded based on a preceding simplified measurement instruction, with a precise measurement result that is based on a succeeding precise measurement instruction.
