所描述的仪器设计标准和分组被推荐给所有新设计的建筑和工业设备制造商。 遵守这些建议将促进性能的提高和机器操作的便利性，保护机器和操作员，并简化仪器设计和生产。

The instrument design criteria and grouping described are recommended to manufacturers of construction and industrial equipment for all new designs. Adherence to these recommendations will promote improved performance and ease of machine operation, protect machine and operator, and simplify instrument design and production.