Definitionn. a fine spiral spring that regulates the movement of the balance wheel in a timepiece
Last update: June 10, 2015
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When a current is passed through the coil it rotates in the field and displaces the index over the scale against the control of a spiral spring like the hairspring of a watch. [Please select]
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As it is forced forwards, _b_ is revolved in a clockwise direction, winding up the hairspring. [Please select]
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The Curb Pins~ sometimes produce the ferric oxide mentioned by their action on the hairspring. [Please select]
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This pulls on a very minute chain wound round the pointer spindle B, in opposition to a hairspring, H S. [Please select]
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There are two forms of spring escapement, but as both employ a hairspring and balance-wheel we will glance at these before going further. [Please select]
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