length

Didot point

range

Record: M542
Definition quality: Historically documented
Conversion mode: range
Calculator: Range only

Definition

A Didot point is about 0.3759 mm; published historical/reference values vary slightly by convention.

Documented range

Surviving evidence places one Didot point between 0 and 0 metres. It is recorded as a range because the documented values were not uniform.

History & use

François-Ambroise Didot revised earlier French point systems in the 18th century; the Didot system became widespread in continental European printing.

Modern use

Modern use is context-dependent and varies by region or measurement system.

Sources & evidence

Source tier — · confidence high

Related measurements

metre

length · International · Modern

SI base unit of length. Its definition fixes the speed of light in vacuum at exactly 299,792,458 m/s, with the second defined from the caesium-133 hyperfine frequency.