铅封器是计量检定单位和仪器检修部门在检修仪器仪表合格后压铅封使用的，是一种不可缺少的工具。我单位研制了一种铅封器，不必更换钢字号码，只要用手轻轻地转动钢字轮就可以。以前的铅封铅用完一个号码后就得再更换一个号码才能使用，有时还经常丢失钢字号码，而这种铅封器 Sealer is the measurement unit and the instrument inspection and maintenance departments in the instrument repair qualified pressure seal used, is an indispensable tool. My unit has developed a sealer, do not have to replace the steel word number, as long as the light hand wheel can be gently turned. Lead seal before the end of a number you have to replace a number to use, and sometimes often lose the number of steel, and this lead seal