First they came in missing parts then busted and by week 8 they finally got something to me I could use. They are a pain to use and never reread to a point I would trust them.
Pros
The product also includes two glass linear scales that are both durable and easy to install. Combined with the advanced digital display system, this makes for a highly efficient and user-friendly tool that can significantly improve the precision and speed of any machining process
Cons
The company's customer support is not responsive and does not provide adequate assistance for customers facing installation or operation issues