Surveying instrument and a method therefor

A surveying instrument includes a measuring system having a component, a support, and a mounting unit that is arranged at the support. The component is mounted on the mounting unit and the support and the mounting unit are configured such that the mounting unit is adjustable relative to the support. The instrument also includes a fine inclination sensor that is arranged at the component and is configured to measure an inclination angle of the component and to output fine inclination data. The instrument further includes a coarse inclination sensor that is arranged at the component, is configured to measure the inclination angle and to output coarse inclination data, and includes an electronic acceleration sensor. The instrument additionally includes an evaluation unit that is configured to select inclination data from the coarse inclination data and the fine inclination data and an output unit that is configured to output the inclination data.