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Method for differentiating a series of graduations of navigation protractors (compasses) by mnemonic colour coding
Method for differentiating a series of graduations of navigation protractors (compasses) by mnemonic colour coding
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机译:通过助记符颜色编码区分导航量角器(罗盘)的一系列刻度的方法
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摘要
The invention relates to a mnemonic device for avoiding confusion on reading navigation protractors: - the GREEN and COLOUR is reserved for the printing, etching or marking of the numbers of the EAST and sector (0@ and 180@ through the 90 mark) and RED for those of the WEST sector (180@ to 360@ through the 270 mark). IMAGE
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