View source for File:Oxyrhynchus papyrus I-29 Euclid's-Elements.jpg

Nonfiction: Fragment of the Oxyrhynchus Papyri. See [[Measurement (nonfiction)|measurement]].

== In the News ==

<gallery>
File:Luminous dial of Soviet aircraft chronometer.jpg|link=Chronometer (nonfiction)|[[Chronometer (nonfiction)|Soviet aircraft chronometer]] prefers measuring time at night, showing off luminous dial to best effect.
</gallery>

== Fiction cross-reference ==

== Nonfiction cross-reference ==

* [[Denier (unit of measure) (nonfiction)]]
* [[Measurement (nonfiction)]]
* [[Number (nonfiction)]]

External links:

* https://en.wikipedia.org/wiki/Papyrus_Oxyrhynchus_29 Papyrus Oxyrhynchus 29] @ Wikipedia

Attribution:

By Euclid - http://www.math.ubc.ca/~cass/Euclid/papyrus/tha.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=1259734

[[Category:Nonfiction (nonfiction)]]
[[Category:Geometry (nonfiction)]]
[[Category:Mathematics (nonfiction)]]