Coverage Checker Automatic check to avoid human error. Keep stable performance and generate consistent results by different operators. Easy to use, even a beginner can use it as proficiently as an experienced operator. Applicable to inspect the coverage of narrow areas on the aviation parts as well as the inner spring coil. Connectable to nozzles to check the coverage of inner holes. Accompanied by focus adjustment tool to check the coverage on curve surface. With USB interface (data line included) to connect with a computer. Compatible with Windows XP(32 bit) and Window 7(32bit) operating