Mechanical SIV120 Mini Portable Fully Automatic Electrician Multimeter Repair Measuring Instrument Built-in Lighting Feature Superior performance: small size, easy to carry and store, good performance. The oil supply unit with special cleaning technology is in itself an excellent accessory for professional workshops and efficient testing. Sturdy and Durable: Made of high-quality plastic material, it is sturdy and durable. Simple assembly: simple assembly structure, easy to use, easy to carry. Energy saving: adjustable manual work, high efficiency, low noise and long service life.