Spring scale
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A spring scale, also known as a spring balance or newton meter, is a type of mechanical force gauge or weighing scale. It consists of a spring fixed at one end with a hook to attach an object at the o
A spring scale
Example of spiral balancer for a sash window
Salter Housewares
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Salter is a British housewares brand. Established in 1760, Salter has been developing precision products for over 260 years. Salter develops and sells products that span a wide range of core product c
Spring scale
…of an object by opposing the force of gravity acting with the force of an extended spring. The first spring balance in Britain was made around 1770 by Richard Salter of Bilston, near Wolverhampton. He and his nephews John & George founded the firm of George Salter & Co., still notable makers of scales and balances…
Salter 5 typewriter, 1892