Abstract
The majority of surveyors in South Africa are aware that on 1st January, 1970, South Africa will change over to the metric system. The system which will in future be used is the mks. (metre-kilogram-second) system as opposed to the c.g.s. (centimetre-gram-second) system. The relationship between the units of length which are at present used and the new unit of length, the international metre has been well advertised, namely:

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