This specification covers modular gage boards for mounting dial pressure gages and dial thermometers for miscellaneous shipboard applications. Gage boards under this specification are suitable for pressure gages and dial thermometers with either turret or back flanged type cases and with either back or bottom connections. Gage boards may be furnished in two types and grades, namely: Type I, Type II, Grade a, and Grade b. Unless otherwise specified the gage boards shall be manufactured from the specified carbon steel for Grade a and form the specified aluminum alloy for Grade b. Materials shall be capable of being bent at room temperature through the prescribed angle and direction without cracking on the outside of the bent portion. Unless otherwise specified, gage boards shall be drilled for mounting the specified dial sizes. When specified, drilling shall be limited to one size gage for either Type I or Type II gage boards. The dimensional requirements for the gage boards are detailed and illustrated.

1.1 This specification covers modular gage boards for mounting 89-mm (3 ½-in.), 114-mm (4½-in.), 152-mm (6-in.), and 216-mm (8 ½-in.) dial size pressure gages and dial thermometers for miscellaneous shipboard applications.

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

1.3 Gage mounting dimensions shall be in accordance with ANSI B40.1.

1.4 The values stated in metric units (SI) are to be regarded as the standard. The values given in parentheses (inch/pound) are provided for information purposes.

Note—Gage boards covered by this specification are those normally supplied by the shipyard as opposed to the shipyard's equipment subcontractor.