Essential Plotting Instruments
Accurate chartwork requires proper instruments. The three essentials are: parallel rulers (or a proprietary plotter like a Breton plotter or Portland plotter), dividers, and a sharp pencil with a rubber. Everything plotted on the chart should be in pencil so it can be erased and the chart reused.
Key Points
- Parallel rulers or proprietary plotter (Breton/Portland)
- Dividers for measuring distance
- Sharp pencil (2B or HB) and rubber
- Always plot in pencil — charts are reusable