Correct answer is... 1 m. It is equal to 2 ft. Wingpan is calculated as stright line from one wingtip to another, so shape of the wing is not taken as factor during measurement. The biggest civil aircraft is 88 m (290 ft) wide, so ADM-20 Quail has 1% percent of it's length. Typical jet airliners are about 34 m wide, so in the comparision ADM-20 Quail has 1% of aircrafts like B737 or A320.
Disclaimer: Our articles and data connected to wingspan of ADM-20 Quail are based on public data from various sources. We are very picky to select an reliable data providers, but we cannot guarantee that everything is 100% error-proof. We recommend for any serious purpose - as a rule of thumb - to request offical data about wingspan from manufacturer of ADM-20 Quail.