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?