Problem of the Week: Unit Definitions and Conversions

An old deed describes two corner monuments as being 18 rods apart. The monuments are recovered and found to be 300 ft apart. What is the difference between the two measurements?

(A) 0.25 rod

(B) 1 yd

(C) 1 m

(D) 2 ft

Early surveyors used a rod, otherwise known as a pole or perch, whose length was approximately 16 1/2 ft. While these units are now considered archaic, they are still found in the public record. Eighteen rods is equivalent to 297 ft. If the current measurement is 300 ft, the difference is 3 ft, or 1 yd.

The answer is (B).

This is problem 7 (1-1) from the NEW third edition of “Surveying Solved Problems for the FS and PS Exams” by Jan Van Sickle, PLS (formerly "1001 Solved Surveying Fundamentals Problems"). Reprinted with permission from “Surveying Solved Problems for the FS and PS Exams” by Jan Van Sickle, PLS (2008 Professional Publications Inc.). For details on this and other FLS exam-prep books, call 800/426-1178 or visit www.ppi2pass.com.