Due to State and Federal Law, we sell Syringes and Needles only to the Medical Facilities. 3.5" Standard 140 degree * Measures the range of motion of metacarpal, phalangeal and interphalangeal joints * Head has two opposing scales marked in 5 degree increments * Features a linear scale in both inches and centimeters on arm * Deluxe model features a larger protractor head and full 180 degree scale for more accurate readings * Shipping Carton Size: 9"L x 6"W x 4"H