电钻
外观
电钻是机械工业、建筑工业和装修行业常用的工具。十九世纪奥地利人Arthur James Arnot和William Blanch Brain将电动机和钻子合装在一起,发明了最早的电钻[1]
- ^ Specifications for registration of patent by William Blanch Brain and Arthur James Arnot titled - Improvements in electrical rock drills coal diggers and earth cutters。 National Archives of Australia (1889)