Skill 2: Scale Determination
Element 1: Introduce Scale of Map
Materials:
1:20,000 scale 1966 Parguera, PR, USGS Topographic Quadrangle
ruler
Exercise:
1. Use 1:20,000 scale 1966 Parguera, PR, USGS Topographic Quadrangle
2. Examine scale at bottom of page.
3. Use ruler.
4. Measure distance across study site from west to east.
____________ How many inches is the distance west to east?
5. Place the ruler over bar scale (bar scale measurement in feet).
____________ How many feet equal the measured map distance across the site?
6. Repeat measurements across the site from north to south.
____________ How many inches is the distance north to south?
_____________How many feet equal the measured map distance across the site?