Gregory's Server
bematist
noun
/ bēma-tist /
archaic
a specialist in ancient Greece and Egypt in making accurate measurement of distance by the use of consistent paces.
Origin: bematistae (Ancient Greek βηματισταί
-==0==-
Alexander the Great employed bematists to keep track of the distance that he traveled during his campaigns.
This word is so archaic that it is not listed as a word by Merriam-Webster or Lexico. Bematists do have an entry in Wikipedia from which I have derived this definition. It may be fitting that the word on offer from Merriam-Webster was inscrutable (unfathomable).
Naturally, that word already previously used here, that lead me to seek a different word.
1/2