The invention relates to a handheld measurement instrument (10) and a configurator (80) forming a measurement kit. The measuring instrument (10) and the configurator (80) are provided each with an interface (30, 35, 36, 84, 86, 87), enabling communication between the measuring instrument (10) and the configurator (80). The handheld measurement instrument (10) further comprises a measuring unit (21, 21a, 21b) for measuring distances or angles of an object by contacting physically distinct points of said object; and a circuit unit (50) applying a function of a functionality on electronic signals/electronic measurement results delivered from the measuring unit (21, 21a, 21b) in order to deliver the measuring results in a desired form to the user by output means (28). The form the results should be presented can be selected by the user using input means (26) of the measuring instrument (10). The circuit unit (50) is configurable by the user using the configurator (80) in order to determine, with which functionality the circuit unit (50) and the input means (26), respectively should be equipped.