This preview shows page 1. Sign up to view the full content.
Unformatted text preview: . Slide the scale to the right
until the 10 foot mark aligns with the right end of
the line.
Now, look at the marks on the left end of the line,
left of the “0.” The left end of the line corresponds
to the ninth mark left of the “0,” which in this case
represents 9 inches. Thus, in a scale of 3/8 inch to 1
foot, this line represents an object 10 feet, 9 inches
long.
Example No. 4:
Use the same line, but this time you are measuring
a “water main” and the plans show a scale of 1 inch
equals 20 feet. Use the engineer scale to measure
this water line.
Lay the engineer scale marked “20” on the left end
of the line. The right end of the line should align
with the number “8”. Remember to multiply that
value by 10 to get an answer of “80 feet.”
Try the activities on the next pages to test your new
skills. The answers are found on the last page. 1. Measure the height and width of this rectangle. The scale is 1/4 inch equals 1 foot. Height: feet Width: feet 2. Measure the exterior dimensions of this rect...
View Full
Document
 Spring '13
 S.Taylor

Click to edit the document details