The tool is used in metalwork applications as diverse as home repair , automotive repair and shipboard preservation .
A needlegun scaler , needle scaler or needle - gun is a tool used to remove rust , mill scale , and old paint from metal surfaces .
The tool is used in metalwork applications as diverse as home repair , automotive repair and shipboard preservation .
A needlegun scaler , needle scaler or needle - gun is a tool used to remove rust , mill scale , and old paint from metal surfaces .