Marking out

Cards (10)

  • Surface used with a mark out lines for reference surface
  • Vernier height gauge is used parallel with the height, like a vertical vernier caliper
  • Jacks and wedges are used to prevent slipping on uneven surfaces
  • Vee blocks are for holding circular workpieces during machining
  • Engineers' squares are used for setting square edges and surfaces
  • Combination set square and protractor head are used for marking out angles
  • Square head is used for marking out lines at right angles to each other
  • Datum lines are used as a guide for machining workpieces
  • Datum point is the point from which all measurements are taken, establishing a reference for work
  • Datum (edge), datum (centre), and datum (centre line) are types of datums used in engineering drawings