lockinspector
nounUK /ˈlɒk ɪnˌspektə/
US /ˈlɑːk ɪnˌspektər/
A person whose job is to check that locks are working and safe.
The lockinspector checked every door in the school before the children arrived.
OTHER MEANINGS
2. A tool or device used to test whether a lock opens and closes properly.
The mechanic used a lockinspector to test the car door lock.
3. A computer program that checks whether files or accounts are locked.
The lockinspector warned us that the file was still in use.
4. Someone who examines locks as a hobby or for a collection.
As a lockinspector, she can tell the age of a padlock just by looking at it.