Jonard GD-50 Round Tip Large Force Gauge, 60-500 grams, Dial Display, 20 grams Graduation, +/- 0.01 Accuracy Measures compression (push) force Analog gauge shows present force in grams (g) Pointer on dial indicates maximum (peak) force Tolerance of + or - 0.01 (reading + maximum scale reading) Measurements can be taken in either a clockwise or counterclockwise direction