UL 61010-031 (ND)-2007 测量, 控制和实验室用电气设备UL 61010-031安全性要求的国家差异. 第031部分: 电工测量和试验用手持探头组件的安全要求 (第一版; 通过和包括2014年11月7日的修订再版)
National Differences For UL 61010-031 Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use - Part 031: Safety requirements for hand-held probe assemblies for electrical measurement and (First Edition; Reprint with Revis