Q: I am hanging a series of wall sconces in my house and I want them to all hang at exactly the same height. Underneath the sconces, I will be installing a chair rail around the perimeter of the room.

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Whether indoors or outdoors, at home or on the job site, laser levels can be essential tools for ensuring accurate results. These tools are relatively common devices that aid levelling and aligning ...

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 ...

Natural light profoundly affects our biology, from how well we sleep, to our brain function and immune response. The ancient Egyptians used solar radiation to disinfect and heal chronic wounds and ...

I bought a laser level. It draws a cross on the wall, with one line being perfectly vertical and the other being perfectly horizontal. If I angle it upwards, it detects that it is no longer level and ...

An elemental examination of an item discovered during an inquiry might provide important information about its origin and history. However, since the item itself may need to be produced as evidence, ...