Marking Out & Measuring (Junior Cert Engineering): Flashcards

Drawing lines/marks on material showing cuts, holes, shapes

Starting reference points for all measurements

Primary tool for drawing lines on metal surfaces

Up to $300\text{mm}$ accurately

On edge, not flat (eliminates parallax error)

Up to $5$ metres

Marking out and checking right angles ($90°$)

Creates small indentations in metal

$90°$

Drawing circles, arcs, transferring measurements

Versatile tool combining multiple functions in one

$0.01\text{mm}$

$0.5\text{mm}$ per complete turn

$0.02\text{mm}$

Cast iron, extremely flat stable reference surface