Tape measure based Yagi antenna were popularized by Joe Leggio ( WB2HOL) =>http://pages.videotron.com/ve2jmk/tape_bm.htm
and are often used for field work and hidden transmitter "fox hunts". Most are VHF (~146 MHz on the 2m ham band) & are rather too large for bushy terrain & indoor work- they also tend to flutter badly in winds.
In contrast higher freq. UHF antenna approaches are more compact, and can be both readily carried thru' snagging vegetation & rapidly deployed. The receiving and transmitting electronics can also be very simple if based on the license free (but low power) 433 MHz ISM band.
This perhaps suits DF (Direction Finding) for learners /scout groups working in a smaller area (such as a park), or local interference tracking.