Model T
adjective
1
: belonging to an initial or rudimentary phase of development
when nuclear weapons were in the Model T stage of development 
New York Times
New York Times2
: old-fashioned, outmoded
a Model T plot
a Model T school plant
Word History
Etymology
from Model T, early type of motor car having only two speeds forward and a hand gasoline feed that was manufactured by the Ford Motor Company between 1909 and 1927