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Zenith's El Primero movement was used by Rolex from 1988 to 2000 for the Rolex Daytona chronograph. The El Primero movement's high rate allows a resolution of 1 ⁄ 10 of a second and a potential for greater positional accuracy over the more common standard frequency of 28,800 vibrations per hour (4 Hz). [ 10 ]
An engagement ring, also known as a betrothal ring, is a ring indicating that the person wearing it is engaged to be married, especially in Western cultures. A ring is presented as an engagement gift by a partner to their prospective spouse when they propose marriage to represent a formal agreement to future marriage.
Claddagh ring. A Claddagh ring (Irish: fáinne Chladaigh) is a traditional Irish ring in which a heart represents love, the crown stands for loyalty, and two clasped hands symbolize friendship. [1] [2] The design and customs associated with it originated in Claddagh, County Galway. Its modern form was first produced in the 17th century. [3]
In 1979, Zenith entered the computer market with the purchase of Heath Company from Schlumberger for $64.5 million, forming Zenith Data Systems (ZDS). [17] The company changed its name to Zenith Electronics Corporation in 1984 to reflect its interests in computers and CATV, having left the radio business two years earlier. [citation needed]
Zenit 122 Zenit-4 with leaf shutter Zenit-16 with vertical travel shutter. The first attempt to make high-end professional camera by KMZ was the Start in 1958. This camera had a full set of shutter speeds (from 1 sec to 1/1000), a lens with an automatic diaphragm in a unique breech-lock mount, and even a knife for cutting-off part of the unexposed film.
The Cheesewring, with an adult visitor for scale. The Cheesewring (Cornish: Keuswask [1]) is a granite tor in Cornwall, England, situated on the eastern flank of Bodmin Moor on Stowe's Hill in the parish of Linkinhorne approximately one mile northwest of the village of Minions and four miles (6 km) north of Liskeard. [2]
Chequers Ring, three-quarter profile The Chequers Ring is one of the few surviving pieces of jewellery worn by Queen Elizabeth I of England. The mother-of-pearl ring, set with gold and rubies, includes a locket with two portraits, one depicting Elizabeth and the other traditionally identified as Elizabeth's mother Anne Boleyn, but possibly her step-mother Catherine Parr.
The original "mood ring" introduced as the Mood Stone in the summer of 1975. A mood ring is a finger ring that contains a thermochromic element, or "mood stone", that changes colors based on the temperature of the finger of the wearer. Finger temperature, as long as the ambient temperature is relatively constant, is significantly determined by ...