The Graham Field 100-001 series (Labtron/Lumiscope) is a line of professional-grade manual blood pressure monitors designed for high-accuracy diagnostics across a full range of patient sizes. Each unit features a certified 300 mmHg manometer gauge with a high-contrast face and a convenient metal clip for attachment to the cuff. This series is distinguished by its comfortable cotton cuffs with hook-and-loop fasteners, providing a softer feel than standard nylon while maintaining durability. Whether used in a pediatrician's office with the specialized Infant or Child sizes or in a general clinic with the Large Adult and Thigh options, these sphygmomanometers offer smooth inflation and controlled deflation for reliable blood pressure assessment.