Abstract: Programmable quantum multimeters are devices which can realize an arbitrary quantum measurement of a given class (exact or approximate) on a quantum state stored in a data register. This measurement is at that specified by the quantum state of the program register. In this lecture we are going to discuss universal quantum multimeters which make it possible to realize (approximatively) an arbitrary projective measurement on one qubit or qudit. We will also describe experimental optical implementations of the simplest quantum multimeters.