规定用于飞机的压力驱动爬升指示器的最低要求，其操作可能会使仪表受到第3.3.段中规定的环境条件的影响。本航空标准涵盖四（4）种基本类型的直接指示仪表，如下所示:I型-范围0-2000英尺/分钟爬升和下降；II型-范围0-3000英尺/分钟爬升和下降；III型-范围0-4000英尺/分钟爬升和下降；IV型-范围0-6000英尺/分钟爬升和下降。

To specify minimum requirements for pressure, actuated Climb Indicators for use in aircraft, the operation of which may subject the instruments to the environmental conditions specified in paragraph 3.3. This Aeronautical Standard covers four (4) basic types of direct indicating instruments as follows: TYPE I - Range 0-2000 feet per minute climb and descent, TYPE II - Range 0-3000 feet per minute climb and descent, TYPE III - Range 0-4000 feet per minute climb and descent, TYPE IV - Range 0-6000 feet per minute climb and descent.