Honeywell BW RigRat User Manual page 74

Year Of Manufacture
To identify the year and month of manufacture, refer to the two-digit marking placed adjacent to the serial number on the
instrument label according to the following table:
Year First digit
Year code
2014 R
2015 S
2016 T
2017 U
2018 V
2019 W
2020 A
2021 B
2022 C
2023 D
2024 E
2025 F
Example: "RA" indicates that the monitor is manufactured in the month of October in the year 2014.
BW RigRat User's Guide
Month Second digit
Month code
January 1
February 2
March 3
April 4
May 5
June 6
July 7
August 8
September 9
October A
November B
December C
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