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Sprayers range in size from man-portable units (typically backpacks with spray guns) to trailed sprayers that are connected to a tractor, to self-propelled units similar to tractors with boom mounts of 4–30 feet (1.2–9.1 m) up to 60–151 feet (18–46 m) in length depending on engineering design for tractor and land size. [1]
IH McCormick 141 self-propelled Harvester-Thresher c. 1954–57, shown in thresher mode, with harvester dismounted For some time, combine harvesters used the conventional design, which used a rotating cylinder at the front-end which knocked the seeds out of the heads, and then used the rest of the machine to separate the straw from the chaff ...
In the early 1990s, the French Army operated two artillery systems designed and manufactured by the state-owned company GIAT: the AuF1 tracked self-propelled howitzer, which had reached the end of its production run, and the TRF1 towed howitzer, which was beginning to be delivered, but in reduced numbers. Absent further orders for its products ...