Small Conveyors
- Cummins
- John Deere
- Caterpillar
- 40-500
- 50-500
- 61-500
- 70-500

Leith Engineering is a family-owned Australian manufacturing business with a long history in agricultural machinery, general repairs and custom-built farm equipment. While WH & JM Leith Engineering was officially registered in 1980, the business began decades earlier when Wally Leith started building and selling side trailers in 1960, followed by the development of the original drop spreader in 1963.
Today, Leith Engineering continues to design, manufacture and improve machinery for Australian farmers and contractors, including comb trailers, grain conveyors, gypsum spreaders and rotary mowers. Built with quality, practicality and customer needs in mind, every product that leaves the factory proudly carries the Leith name.