Product review (4 stars): Great little machine!
I ordered this product and ended up receiving a faulty unit. The company sent me a new one and it works really well. I tested its accuracy and response against a new General Electric Protimeter MMS2 and it is surprisingly accurate and adjusts itself at a good rate, and stays fairly consistent even when moving slightly or placing it in different places within short distances. Product is great for this price. My only concern is that it might not be durable enough for heavy travel and usage, based on the faulty unit I initially received, but the company replaced it soon after free of charge so I'm happy.