U.S. Army Equipment Log Book is a handy organizer for aircraft and vehicle maintenance records. Vinyl cover is embossed with the Army Seal and reads U.S. Army Equipment Log Book for clear identification of function and record-keeping. Be more precise in identifying this three-ring log book by sliding a 5" wide x 3" high insert into the front title slot and a 1" wide x 3" high insert into the spine title slot. Store 6-3\/8" wide x 9-1\/2" high sheets in the rings and loose sheets in the pocket on the inside back cover. Three-ring closure includes a booster for easy opening and closing. Round rings are spaced 3-1\/2" apart.