1 Top recommended engine rpm If a tachometer is used, it will have a mark (red line) indicating maximum rpm Some tachometers mark the red line with a colored sector Others have two lines: The lower one marking the maximum allowable sustained engine rpm, the higher line indicating the absolute maximum rpm 2 (RL) Tires with a red concentric line which were marketed in the late '60s and early 70s
Located a the center of the rink, the red line divides the rink in half lengthwise
An intense coronal emission line at 637 4 nm from Fe X (an iron atom from which nine electrons have been stripped) It identifies relatively cooler regions of the corona
The line that divides the rink into two equal parts This area is center ice Referee The referee supervises the game, calls the penalties, determines if goals are scored, and handles face-off's at center ice at the start of each period and after goals The referee has the final decision over all other officials Roughing A penalty called when a player shoves another player or is involved in a minor altercation
The 12" center line drawn from sideline to sideline, bisecting the rink into two equal segments
A line, 12 inches wide, that extends across the ice midway between the goal lines Also known as the center line