Chaucer has treated a toise as if it were equal to two feet; it was really about six.
A toise is two yards; and from the plan it appeared to be near the truth.
These towers are said to be about one toise higher than those of Notre-Dame.
Subsequently, he investigated the expansion of a toise of iron from the variation in the period of his pendulum.
The toise used in this measure was afterwards regarded as the standard toise, and is always referred to as the toise of Peru.