Effects of magnification on a subminiature assembly operation

Abstract

This experiment was designed to investigate the effects of magnification on the duration of elements of a subminiature assembly operation. The task consisted of grasping a metal dot .010 in. in diameter wtih a tweezers, transporting it to a hole, and dropping it into the hole. Ss used a binocular type industrial microscope and performed under 3 magnifications, 20X, 30X, and 40X. Precision of the task was varied by changing the diameter of the hole into which the dot was assembled. Results indicated that no single magnification was optimum for all elements. For pick up and travel loaded, 30X was optimum while for travel unloaded, 20X was optimum. Results for the assemble element were inconclusive. There was no evidence that the optimum magnification is dependent upon the precision requirements of the task. (PsycInfo Database Record (c) 2025 APA, all rights reserved)