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		Vibration Frequency Computation Wheel   Quick & Easy Tool RPM-to-Frequency Calculations     FREE OFFER: Receive this easy-to-use Vibration Frequency Computation Wheel. Send your request via letter, FAX or e-mail to: Chase Ergonomics, Inc. P.O. Box 92497 Albuquerque, NM 87199-2497 FAX: (505) 345-2340   This double rotating disk chart allows instant conversions from tool RPM to frequency and visa-versa. Threshold Limit Values adapted from the American Conference of Governmental Industrial Hygienists are listed on the chart by permission. This is a one-time free offer.                      contour accupressure