"ITEM IS A PRECISION INSTRUMENT TO MEASURE,CALIBRATE AND STANDARDIZE THE PRESSURE OR POWER REQUIRED TO ACTUATE FINE PRECISION MECHANISMS AND SPRING TENSION;2.50 IN. DIAL,4.125 IN. LONG PLUS 1.8125 IN. ARM W/A 20 DEGREE ANGLE,1.8125 HEIGT WITH 0.875 CONTOUR;GRAM SCALE 250-2000 GRAMS"