The Nurse Assist Clipboard is the perfect quick reference tool for nurses. It combines clock, timer, alarm and calculator functions and features 13 different diagnostic and assessment guides. Guides include: EKG interpretation guide (reverse side), pupil dilation gauge (reverse side), weight and volume equivalents guide, and medical abbreviation guide. Imprinted rulers in inches and centimeters ensures that nurses will always have a ruler handy when they need one. Constructed of heavy duty ASB plastic for maximum durability. Clip Board measures 13.5" x 9". Includes required L1131 battery.