[Code of Federal Regulations]
[Title 46, Volume 7]
[Revised as of October 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR197.458]

[Page 436]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 197--GENERAL PROVISIONS--Table of Contents
 
                 Subpart B--Commercial Diving Operations
 
Sec. 197.458  Gages and timekeeping devices.

    The diving supervisor shall insure that--
    (a) Each depth gage and timekeeping device is tested or calibrated 
against a master reference gage or time-keeping device every 6 months;
    (b) A depth gage is tested when a discrepancy exists in a depth gage 
reading greater than 2 percent of full scale between any two gages of 
similar range and calibration;
    (c) A timekeeping device is tested when a discrepancy exists in a 
timekeeping device reading greater than one-quarter of a minute in a 4-
hour period between any two timekeeping devices; and
    (d) Each depth gage and timekeeping device is inspected before 
diving operations are begun.