This frame was setup at the construction site with small wheels attached so that it could be "rolled along from end to end as each piece of the roof was finished."
Mashine hii iliekwa kwenye eneo la ujenzi ikiwa na viringi vilivyotiwa ili kuweza kuzungushwa zungushwa kutoka sehemu moja kwenda nyengine pale ambapo kipande kimoja cha paa kinapomalizika kutiwa.