The words “permanent policeman” as used herein shall mean any person, male or female, who is a chief, deputy chief, marshal, deputy marshal, colonel, major, captain, lieutenant, sergeant, officer of other rank, inspector, chief clerk, clerk, radio dispatcher, radio engineer or operator, patrolman, trooper, detective, investigator, mechanic, electrician, laboratory worker or other technical expert regularly employed on full time duty by a police department or police force of the state, or of any city, town, village or precinct in the state.