Skill 2: Scale Determination
Element 1: Introduce Scale of Map
Materials:
1997/1993
1:24,000 scale San Mateo, CA / Redwood City,
CA, USGS Topographic Quadrangle
ruler
Exercise:
1.
Use the 1:24,000 scale San Mateo, CA / Redwood City, CA, USGS Topographic
Quadrangle scale
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 equals 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 equals the measured map distance
across the site?