Abstract: The present invention relates generally to construction line reels used in building construction for layout of true lines between two points and relates in particular to a construction line reel which accommodates more than one gauge of line, which permits line tension control as a means of precluding line tangling and twisting and spool or reel backlash as release or reeling in occurs, permits reeled in line to form tightly and evenly on the spool, increases the ease and speed of reeling in line providing a construction line reel configuration which is easy to hold and control and which may be stored in a nail pouch or coveralls or hooked to a tool belt. This invention also relates to kite flying and will provide storage and control of kite string and control of kites.