Throw a green beam and leave your hands free to adjust your workpiece.

Buy an inexpensive torpedo laser level for occasional use around the house, or if you want a compact level for your tool belt. As with traditional levels, you’ll have to manually align the bubble with ...

I’ve got some bad news for you: Our eyes are not always reliable sources of information. If you’ve ever stepped back from a completed project and wondered why it doesn’t look right, it’s probably ...