cadrans

cadrans

(ˈkædrənz)
n
an instrument which measures the angles of gems and is used during the cutting process
[C19: from French dialect, literally: quadrant]
References in periodicals archive ?
Westerner, who was also trained by Lellouche, won five Group 1 races, including two Prix du Cadrans and an Ascot Gold Cup.
Connections of Persian Punch, who had been placed in two Cadrans, were puzzled by his poor effort, but also blamed the ground, which jockey Martin Dwyer described as "very testing".
THIS is a notoriously dangerous time of year for punters, and British fans who followed the form book with Mr Dinos or their hearts with Persian Punch were left licking their wounds after they were both beaten a street in the Prix du Cadran, the pair having been all at sea in the holding ground.