File talk:Spring balance (Steam and the Steam Engine, Evers).jpg
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This is also an example of a Newtonmeter which measures the force of something.
- No, they would have a simple spring balance. This one also has an adjusting nut on the top, so it's a device for applying a force – in this case, as a safety valve. Andy Dingley (talk) 20:15, 16 December 2012 (UTC)
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