NOTE: Before attempting adjustments to the regulator disk, first lock the pendulums by using the lever located on the front of the base. FRROM MY PERSONAL SHOP NOTES: If your clock loses two minutes per day and the indicator hand points to number 8 on the disk - move the disk in the direction of the arrow marked F until the indicator hand will point to number 1. The distance between each number is equivalent to 1/2 minute in 24 hours + or. Should you find it necessary to regulate the clock, observe the number to which the indicator hand points. The small indicator hand will be pointing to a number on the disk at which the clock was regulated before leaving the factory. Time Regulation Tip: On the top of the pendulum is a disk on which numbers are engraved 1 - 16 and two arrows marked F - S. The following information is copied from SCHATZ (tm) OWNER'S HANDBOOK. This is to include most 400-day and 1000-day clocks. CLOCK REGULATION TIPS FOR THE ROTATING REGULATOR These Regulations tips are useful for regulating the rotating regulator.