Model of Siam plough. This type of plough was made by local craftsmen and was in general use in Siam.

The late 18th century and early 19th century was a period of rapid development in many countries during which, the complete iron plough began to replace wooden type. Ploughs are basically two types; those either with or without land wheels, and called respectively wheel ploughs or swing ploughs. The latter are lighter in draught but require an experienced ploughman to work them; less skill is needed for wheel plough peration.

Common features of plough design such as tapering share whihch offers least resistance when passing through the soil, the hollowed-out and twisted mouldboard which turns the furrow slice, and the beam design which enables the most efficient transmission of power, are all evident in the models from those period.