A guide for a machine tool including a vertical upper column adapted for stable positioning at a work station and an elongate horizontally orientated arm extending outwardly from and pivotally attached to the upper column at a pivot is disclosed wherein the pivot is provided by two vertically spaced apart pivot points so as to allow the arm free radial movement in a horizontal plane. The latching micromagnetic switch includes a cantilever, a permanent magnet, and a coil configured to latch the latching micromagnetic switch in one of two positions each time energy passes through the coil. An arm supports the stopper and is configured to pivotally move the stopper with respect to the nozzle. A delivering section repeats delivery of each group times determined by the delivery times determining section. The method involves utilizing transcutaneous electrical nerve stimulation in combination with administration of a ginsenoside, such as Rb1. The composition is solubilizable within 30 seconds in cool to cold water to provide an effervescent analgesic solution that can be readily orally administered to an individual in need of analgesia.