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Reference.org
Needlegun scaler
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<p>A needlegun scaler, needle scaler, or needle-gun is a tool used to remove <a href="/facts/Rust/sajUmaz8">rust</a>, <a href="/facts/Mill_scale/WKEFIXAj">mill scale</a>, and old paint from metal surfaces. The tool is used in metalwork applications as diverse as home repair, automotive repair, and shipboard preservation. </p>