计数器的计数时间宽度和显示方式由键盘设定。
The width of count time and display style can be set respectively by keyboard .
外部复位，计数抑制，键盘禁用。
配有全套辅助砝码，试样夹，磨擦轮，真空装置，膜式控制键盘及电子计数器。
Supplied with a full range of auxiliary weights, specimen holders, abrasive wheels, wheel refacer and vacuum unit.
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