A Chronogist
hydrologist
A person who works on both clocks and watches or watches alone (for some reason) is called a Horologist. But I have been told by a French man who has four generations of watch/clockmakers in his family that a clockmaker that only works on clocks is called a Pendulier (can't find the correct spelling)
A person who works with concrete is typically called a concrete worker or concrete finisher. They specialize in mixing, pouring, and finishing concrete for various construction projects, such as sidewalks, foundations, and roadways. In some contexts, they may also be referred to as concrete masons.
A blacksmith:)
The person is a steel-worker.
Horologist
A "spectator".
If you need the answer to the joke it is "a watchman"
a watch maker or to be precise a jeweller seeing as watches contain quartz i guess
Film buff ,cinimafile.
A person who sells jewels is called a jeweler.
it must be horologist!
Tech Person
a slave
Employee
besides an everyday person??? sincerly sackman Jones DLUX
someone who works for a business