A levelling arm (adjustable up and down movements) for manual sandblasting helps to make the sandblaster operator’s work more ergonomic. It relieves strain and significantly reduces operator fatigue, improving work quality and efficiency. By significantly relieving the operator of the effort of holding the sandblasting head, it enhances control over sandblasting and minimises the risk of accidental damage to the sandblasted surface. As a result, it is economical, ergonomic and safe to work with. The machine can be connected to our Sandmaster Junior Plus and Sandmaster Pro, as well as other pressure sandblasting machines. The arm is made up of 3 joints, allowing smooth movement and comfortable operation of the head on the sandblasted surface. It bears the entire weight of sandblasting and requires only horizontal movements.