1.1 This specification covers modular gauge boards for mounting 89-mm [3¹/₂-in.], 114-mm [4¹/₂-in.], 152-mm [6-in.], and 216-mm [8¹/₂-in.] dial size pressure gauges and dial thermometers for miscellaneous shipboard applications.

1.2 Gauge boards ordered under this specification are suitable for pressure gauges and dial thermometers with either turret or back flanged type cases and with either back or bottom connections (see Appendix X1).

1.3 Gauge mounting dimensions shall be in accordance with ASME B40.1.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.