技術主任(製圖)主要負責：(a)擬備彩色地圖、圖則、影像地圖、圖表及其他各類圖則；(b)收集、編製及處理數據；(c)保存辦公室記錄及編製生產統計數字；(d)保存地籍、製圖及相關的數據庫；(e)參與電腦系統的管理和設計工作；以及(f)在地圖產品的售賣和推廣方面提供顧客服務。 (註：可能須不定時工作，以及借調至其他政府部門工作。)

A Technical Officer (Cartographic) is mainly deployed on (a) preparing colour maps, plans, photomaps, charts and miscellaneous drawings; (b) performing data gathering, compilation and processing; (c) maintaining office records and compiling production statistics; (d) maintaining cadastral, mapping and related databases; (e) participating in computer system administration and design; and (f) providing customer service in the sale and promotion of map products. (Note: May be required to work irregular hours and be seconded to other Government departments.)