OIT Tools and Equipment Flashcards

What does a Vernier caliper measure that a standard steel rule cannot?

Answer: Precise fractional measurements to within 0.02 mm or 0.001 inch

A Vernier caliper can measure to fine tolerances (0.02 mm or 0.001") using its sliding Vernier scale, far beyond what a standard rule can read.

In an industrial trade setting, what is the main function of a pipe threader?

Answer: To cut external threads onto the end of a pipe

A pipe threader is used to cut standardized external (male) threads onto the end of a pipe so it can be joined with fittings.

What is the correct way to handle a tool that has been found defective or damaged?

Answer: Tag it out of service and remove it from use until repaired or replaced

Defective tools must be immediately tagged out of service and removed from the work area to prevent injury, following lockout/tagout safety protocols.

Which measuring instrument would a tradesperson use to measure the precise depth of a slot or hole?

Answer: Depth micrometer or depth gauge

A depth micrometer or depth gauge is specifically designed to measure the depth of slots, holes, and recesses accurately.

Why is it important to use the correct blade tooth count (TPI) when cutting with a reciprocating saw?

Answer: Higher TPI provides smoother cuts in thin materials; lower TPI cuts faster in thick materials

Matching TPI to the material ensures efficient cutting — higher TPI for thin or hard materials prevents blade grabbing, while lower TPI removes material faster in thick stock.

What safety feature must be present on a bench-mounted drill press used in Ontario trade shops?

Answer: A properly adjusted and secured chuck guard and emergency stop

Ontario trade safety requirements mandate that a drill press have a secure chuck guard and an accessible emergency stop to protect operators from rotating parts.