Examples of marking out

The plate shown at step 1 has been filed to length and width with the edges square and requires the position of the steps to be marked out 

Use a square on one datum edge and measure the distance from the other datum edge using a precision steel rule. Scribe lines. 

Repeat with the square on the second datum edge and scribe lines to intersect. 

The plate shown at step 1 has been cut out 2 mm oversize on length and width and has not been filed. All four sides have sawn edges. 

Measure from each long edge and find the centre using a precision steel rule. Scribe the centre line using the edge of the rule as a guide. Find the centre of the small radius by measuring from one end the size 

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