The Intellitron ATM-0125 25 ft Ham Band Measuring Tape is listed as a 25 ft measuring tape, with 1/4 wave markings for 10m to 2m. Since 1/4 wave of the 30m band is less than 25 ft (about 23 ft), why does it not have markings for 30m, 20m, 17m, 15m, and 12m too? Or is the 10m a typo?