a locksmith
A locksmith repairs locks.
locksmith
A person who repairs and installs locks is called a locksmith. They specialize in handling various locking systems, ensuring security for homes, businesses, and vehicles.
A person who installs and repairs water systems.
A person who repairs and installs electrical equipment.
A locksmith
A plumber is a person who installs and repairs pipes, fixtures, and appliances.
A person who installs repairs replaces and dismantles the machinery and heavy equipment used in almost very industry is called a machinist.
A locksmith repairs locks
I think the most proper name would be glazier, which is someone who installs and repairs glass.
a locksmith
Someone who makes and repairs locks is a locksmith; someone who makes hinges would be a blacksmith or forger. Sometimes one person will be both; today most hinges and locks are made in factories.
A plumber typically installs sinks.