This set was given to me but I have no use for it as already have these brand new in box and un opened. This Megger TPT420 voltage tester and MPU690 Proving Unit is a must-have for any business or industrial setting. With its reliable and efficient performance, it is perfect for testing and measuring various electronic systems. The brand Megger is well-known for producing high-quality test equipment parts and accessories, and this set is no exception. The TPT420 voltage tester and MPU690 Proving Unit are both durable and easy to use, making them ideal for professionals in any field. Whether you are in the business of testing and measurement or simply need a reliable unit for your electronic systems, this set is an excellent choice.