Zawada NDT MD-20 handheld and light-weight wire-rope tester is a simple to use instrument to test the condition of small diameter ropes 8-20mm. It indicates the occurrence of rope defects that exceed the set level of detectability. The instrument is designed to quickly detect defects such as wire breaks and localized corrosion. The instrument operation is based on magnetic field, a world renowned method developed by the Academy of Mining & Metallurgy in Krakow. Zawada NDT MD-25 is similar to MD-20 but designed to test bigger wire-rope diameter 10-25mm.