description of timepieces
• (n.) An account of instruments that show the hour. • (n.) The art of constructing clocks or dials; horography.
Hor`o·lo`gi·og'ra·phy noun [ Greek ... horologe + -graphy .] 1. An account of instruments that show the hour. 2. The art of constructing clocks or dials; horography. 
horologiography 1. A description of horologes or timepieces. 2. The art of constructing horologes.