The SPM Lubechecker works with your grease gun to monitor the shock pulses from the bearing and indicates the effect of the fresh lubricant on the oil film inside the bearing. Instead of assuming that your bearings are properly lubricated, you can immediately watch the result.
Upon hitting the start button, the instrument self zeroes and the bar-graph display is full scale, showing that it is ready for use. Connect your grease gun to the nipple and start to pump. The bar-graph display shortens when the grease penetrates to the load zone of the bearing.