What tool is used to check if a surface is perfectly horizontal?
AnswerSpirit level
The bubble in a spirit level centers when a surface is level.
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Handy facts & stats
7 fact-checked facts about DIY home repair and handy skills, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
What type of screwdriver has a cross-shaped tip?
AnswerPhillips
Phillips drivers fit cross-slotted screws.
Going deeper
What is an Allen key used for?
AnswerTurning hexagonal socket screws
Allen keys are L-shaped hex keys, common in flat-pack furniture.
What does a stud finder locate?
AnswerWooden or metal framing behind a wall
Hanging heavy items on studs gives them solid support.
What is the standard spacing between wall studs in most U.S. homes, center to center?
Answer16 inches
Studs are usually 16 inches on center, sometimes 24.
Expert level
What does sandpaper's grit number tell you?
AnswerHow coarse or fine it is
Lower grit is coarser; higher grit is finer.
What does GFCI stand for on bathroom and kitchen outlets?
AnswerGround fault circuit interrupter
GFCI outlets cut power fast when current leaks to ground.
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