經緯儀使用性之研究

A Study on the Usability of the Theodolite

經緯儀為大地工程領域量中測距離及角度最常見及且最有用的儀器。本研究採用使用性方法建立評估之程序，調查專業熟手在使用經緯測量儀之行為。本研究所發現之使用上的問題，及研究結果可以做為日後設計改進的標的。根據所得資料進行分析，發現以眾數方法較平均數方法得到較合理的結果。主要的使用性問題發生於專業熟手讀取資料時，約有百分之十發生迷向錯誤。改善資料讀取方向的問題，可以大輻改善經緯儀使用時的錯誤性。本研究並証實使用性工程方法可以用來評估專業儀器之操作性問題。

Theodolite is the most popular and useful equipment for measuring distance and angle between two targets in the field of civil engineering. This study based on the methods of usability engineering, is aimed to investigate the behavior of professional theodolite users. The usability problems and experimental results by this study could offer some notes for the redesign of this device. According this study, the results obtained from mode scores were reasonable than mean scores. The most of usability problems occurred when the professional users read the raw data from meter. Near 10% professional users had disorient operator error. Shooting these disorient problems can decrease this kind of error. This research also validated that the usability engineering method can be used to evaluate the operational problems of professional instrument.