Linear measurements of traverses

(1) (a) All linear measurements of third and fourth order traverses shall be measured using equipment and methods appropriate to the standards of specified in Regulations 34 (1) and (2); Land Surveyors 23 (b) Slopes shall be determined by a theodolite, with a degree of precision appropriate to the standards specified in Regulation 34 (1) and (2), and the theodolite shall be read on both faces; (c) All measurements shall be reduced to the horizontal at mean sea level. In addition, measurements made with a measuring band shall be corrected for temperature, standardisation and, where appropriate, sag. (a) All linear measurements of subsidiary traverses shall be measured using equipment and methods appropriate to the standards of accuracy specified in Regulation 34 (3); (b) Slopes shall be determined by a theodolite or Abney level with a degree of precision appropriate to the standards specified in Regulation 34 (3); (c) All measurements shall be reduced to the horizontal.