The FocusMonitor FM+ is a versatile opto-mechanically scanning diagnostics system for the analysis of focused laser beams from the far infrared to the blue spectral range. It directly measures power density distributions of high power lasers and does therefore allow a comprehensive evaluation of complete setups at full power. As state-of-the-art toolbox it reliably determines beam properties, geometric dimensions, focal positions, beam parameter products, beam quality factors and entire caustics of focused laser beams. The fast and easy exchange of the measuring tip enables the FM+ to measure different laser beam sources and systems solely by selecting the optimal measuring tip and corresponding detector.