3.2.8 specialist techniques

Question 1

what is a adatum reference point

Answer 1

a datum reference point is the point from which all measurements are taken from. usualy found in the corner of a design or from the centre or edge of a circular shape.
it increases accuracy as all measurements are taken from this point

Question 2

what does a scale drawing allow a designer to do

Answer 2

accurately represent an object or building in a more practical size. diagram will include accurate measurements that have been enlarged or reduced by a specific ammount. It will be shown on drawing. improves understanding of the proposed shapes and spacial relationships

Question 3

what are jigs

Answer 3

used to hold a piece of material during cutting, drilling or bending. it improves accuracy and efficiency.
secures the work quickly and causes no damage
work piece is always located against a reference point or datum edge

Question 4

what are templates

Answer 4

shaped pieces of material used in cutting, drilling and shaping.
ensures an item is accurately made and it can be replicated to ensure a consistent quality. should be durable for repeatable use