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Ebauche, Endstone, Equinox, Equation Of Time, Escape Wheel, Escapement
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Ebauche
Incomplete (jeweled or non-jeweled) watch movement without regulating organs, main spring, dial and hands. |
Endstone
Undrilled jewel, placed on the balance jewel with the tip of the balance-staff pivot resting against its flat surface, to reduce pivot friction. Sometimes used also for pallet staffs and escape wheels. |
Equinox
The time when day and night are of equal length, when the sun is on the plane of the equator. Such times occur twice in a year: the vernal equinox on March 2lst-22nd and the autumnal equinox on September 22nd-23rd. |
Equation Of Time
Indication of the difference, expressed in minutes, between conventional mean time and real solar time. This difference varies from -16 to +16 seconds between one day and the other. |
Escape Wheel
A wheel belonging to the mechanism called escapement |
Escapement
Positioned between the train and the balance wheel and governing the rotation speed of the wheel-train wheels. In today's horology the most widespread escapement type is the lever escapement. In the past, numerous types of escapements were realized, such as: verge, cylinder, pin pallet, detent and duplex escapements. Recently, George Daniels developed a so-called "coaxial" escapement. |
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