A versatile waterproof lever indicator (or dial test indicator, DTI) suited to alignment operations on machine tools and similar applications in the presence of coolant, especially where the slim round body (Ø9.5mm) is an advantage for reaching locations with restricted access. The measuring direction is easily reversed and the jewelled movement provides lowest friction and stiction for smooth and precise operation. Supplied with a comprehensive set of mounting accessories and interchangeable styli that enable immediate use in almost any situation.