本文件规定了照相玻璃板的标称尺寸、切割尺寸及其公差。它还规定了标称基板厚度及其公差，并为19世纪玻璃平板相机新制造支架中使用的薄片胶片提供了交叉参考。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies the nominal sizes of photographic glass plates, together with cutting dimensions and their tolerances. It also specifies the nominal substrate thicknesses and their tolerances, as well as providing a cross-reference for sheet films being used in newly manufactured holders for 19thcentury glass plate cameras.All current amendments available at time of purchase are included with the purchase of this document.