The gun house could have up to an extra in auxiliary equipment. This would particularly focus on the regular inspection of auxiliary equipment. In parallel, legionary armour and equipment were abandoned in favour of auxiliary equipment. An LRU is usually a sealed unit such as a radio or other auxiliary equipment. The engineering company maintains an equipment list with major equipment, auxiliary equipment, motors, etc. A gas turbine, a generator, and auxiliary equipment were supplied by Alstom. Auxiliary equipment was broadly similar to that of the legions. Significant energy may be consumed by auxiliary equipment, such as pumps, which effectively reduces efficiency. Another improvement was electrically powered auxiliary equipment, rather than steam-driven machinery. The main auxiliary equipment includes thermoplastic paint pre-heaters, hand-push pre-markers and road marking removers.