handling and caring for drawing instruments and materials

We need to take care of our drawing instruments in order to prolong their service life.

Basic Techniques of Handling Drawing Board

1. Do not use pins for fastening your paper to the board, use tapes or clips.
2. Do not use blade or knife to cut something on the surface of your drawing board.
3. Always cover the surface with cardboard or thick paper.
4. Keep the drawing board in a safe place when not in use.

Basic Techniques of Handling Tee-Square

1. Never use the tee-square as a walking stick or as a cane.
2. Do not use pen-knife or blade along the edge of the tee-square
3. Always hand your square when not in use.
4. Always keep your tee-square clean.

1. Do not use any sharp object such as razor blade or knife on their edges.
2. Keep them away from fire.
3. Always keep them in a safe place immediately after use to prevent leakage.

Basic Techniques of Handling Pair of Compasses or Dividers

1. When not in use, keep them away in a safe container.
2. Never use compasses or dividers as paper holders.
3. Do not use their needle points to punch holes.

Other Instruments

All other instruments should be kept in their packets after use. A cupboard should be made available for complete storage of the drawing boards and all other instruments.

EVALUATION

1. Why do we need to take care of our drawing instrument?
2. How do we take care of tee-square?
3. What are the uses of (a) drawing board (b) tee-square (c) set-square