BS 3403-1972
工业、铁路和海运用指示转速表及速度表系统规范
Specification for indicating tachometer and speedometer systems for industrial, railway and marine use
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- 适用范围
- Specifies requirements for indicating tachometer and speedometer systems with or without revolution counters for industrial, railway and marine applications. Does not cover digital tachometers, nor does it cover aircraft applications or speedometers for road vehicles. (See BS 3190).