The two officials stationed along the sidelines who monitor the offside rule and point out fouls to the referee.
responsible for calling offsides, icings, and handling all face-offs except at center ice; do not officially call penalties but can recommend to a referee that one may be warranted.
Officiate game with referee. Each game has two linesmen, who are responsible for calling icing, offsides and two-line passes. They also drop puck for faceoffs not at center ice, and can recommend penalties to referee.
the two officials on the ice, one toward each end of the rink, responsible for infractions of the rules concerning off-side plays at the blue lines or center line and for any icing violations; they conduct most of the face-offs, sometimes advise the referee concerning penalties, and separate players who are fighting; they wear black pants and an official league sweater, and are on skates.
Now known as assistant referees. If they are certified, assistant referees may help the referee call fouls, offside and out-of-bounds calls.
The two officials who assist the referee in making his decisions; they monitor the sidelines and goal lines to determine when a ball goes out of bounds or when players are offside; they use a flag to signal their observations.
The two officials who assist the referee. Linesmen monitor the sidelines and goal lines and determine when a ball leaves the field of play or a goal is scored.