What does a spirit level show?
AnswerWhether a surface is level or plumb
A bubble centred between the lines shows a surface is horizontal (level) or vertical (plumb).
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Garage facts & stats
8 fact-checked facts about garages and home workshops, each with the reason behind it. 4 more are in today's round and join this page after it closes.
The basics
Tyre pressure is often measured in psi. What does psi stand for?
AnswerPounds per square inch
Psi measures pressure as pounds of force on each square inch.
Going deeper
The word 'garage' comes from a French verb meaning...
AnswerTo shelter or park
'Garage' comes from the French 'garer', to shelter or dock a vehicle.
What does a torque wrench let you do?
AnswerTighten a bolt to a set amount of turning force
Torque wrenches click or show a reading when the chosen torque is reached.
A hydraulic car jack lifts heavy loads using which principle?
AnswerPascal's principle
Pressure applied to a confined fluid is transmitted equally, so a small force can lift a big load.
Which metal coats galvanised steel to protect it from rust?
AnswerZinc
Zinc corrodes in preference to the steel underneath, protecting it.
Expert level
What type of spring on many overhead garage doors stores energy by twisting?
AnswerA torsion spring
Torsion springs above the door twist as it closes, storing energy that helps lift it.
What is a 'pegboard' in a workshop?
AnswerA panel of evenly spaced holes for hanging tools on hooks
Pegboard lets you move hooks around to organise tools on a wall.
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