🔧 Original English-made device - Megger DET3TD - in excellent condition and 100% functional. ✅ Specifications: Brand: Megger (British) Model: DET3TD Measures earthing resistance using several methods (2P / 3P) Measurement frequency: 128Hz Maximum voltage: 100V CAT IV Clear LCD digital display 📦 Complete set includes: Main device 3 sets of test leads (red - green - yellow) of different lengths 2 stainless steel earth spikes Original sturdy carrying case (Hard Case) Instruction manual Uses: An essential tool for every contractor and electrical engineer - used in: Testing earthing systems at construction sites Power stations and factories Residential and commercial buildings Electrical safety inspection certificates