Vibration of the fingers or hands causes vasoconstriction during vibration exposure and for a period following exposure. Some previous studies have explored how the vasoconstriction depends on the magnitude and frequency of vibration, but the systematic independent investigation of different magnitudes at each frequency is slow. This study explores a quick method of determining the effects of vibration magnitude and contact force on the vasoconstriction during exposure to vibration. Finger blood flow was measured every thirty seconds in ten healthy male subjects while the right middle finger was exposed to force and vibration. Blood flow was measured in the exposed right middle finger, the unexposed right little finger and the unexposed left middle finger. Subjects were exposed to two conditions each lasting 62 minutes. A vibration condition consisted of five periods:​ (i) no push force, (ii) 2 N push force, (iii) 2 N push force while the magnitude of 125 Hz vibration increased linearly in magnitude from 0 to 88 ms -2 r.m.s. (iv) 2 N push force, (v) no push force. A control condition was similar but without vibration during the third period. The application of the push force reduced finger blood flow in the exposed finger. In the exposed finger, increases in vibration magnitude progressively reduced finger blood flow. The method may have application to the exploration of the effects of both vibration magnitude and force on finger blood flow.