Before revision: A flexible curve: the modern counterpart of a lesbian rule A lesbian rule was historically a flexible mason's rule made of lead that could be bent to the curves of a molding, and used to measure or reproduce irregular curves.
After revision: A flexible curve: the modern counterpart of a Lesbian rule A lesbian rule was historically a flexible mason's rule made of lead that could be bent to the curves of a molding, and used to measure or reproduce irregular curves.