Search results
Results from the WOW.Com Content Network
Engraved (stainless steel) No Earliest model carries extra tachymeter engraving at 275 units/hr. [11] 1965–69 6240 Black (acrylic inlay) Yes First appearance of optional metallic dial finish. [9] 1965–69 6241 No All variants include "Daytona" printed on dial. [9] 1970 6262 727: 21,600: Engraved (stainless steel) Produced for one year only. [7]
The back plate has various shapes: Full plate movement In this design, used in the earliest pocketwatches until the 18th century, the back plate was also circular. All the parts of the watch were mounted between the two plates except the balance wheel, which was mounted on the outside of the back plate, held by a bracket called the balance cock.
Stainless steel, also known as inox, corrosion-resistant steel (CRES), or rustless steel, is an iron-based alloy containing a minimum level of chromium that is resistant to rusting and corrosion. Stainless steel's resistance to corrosion results from the 10.5% or more chromium content, which forms a passive film that can protect the material ...
Sekonda also markets watches under the sub-brand SEKSY for ladies' fashion, ONE for men's fashion and Xpose for rugged outdoor lifestyles of either gender. Between 1998 and 2002, Sekonda was the title sponsor of the Superleague , then the top flight division in British ice hockey , and the precursor to the Elite League .
The two metallic plates in the NERA sandwich are made of steels of varying hardness and thickness. Depleted uranium plates have also been tested. [7] Rubber and plastic were initially used as the inner non-metallic material, but modern materials now include foam, nylon, polycarbonate, glass, elastomer and more energetic materials such as glycidyl azide polymer (GAP).
Blackplate is made of non-tinned [2] iron or steel and is annealed on open flames or in an annealing box. [3] Its dark appearance is caused by its reaction with the surrounding air. [ 3 ] During warm rolling, blackplate can be manufactured to thicknesses of 1.5 mm or more. [ 4 ]
A watch glass is a circular concave piece of glass used in chemistry as a surface to evaporate a liquid, to hold solids while being weighed, for heating a small amount of substance, and as a cover for a beaker. When used to cover beakers, the purpose is generally to prevent dust or other particles from entering the beaker; the watch glass does ...
The only other widely used clock face today is the 24 hour analog dial, because of the use of 24 hour time in military organizations and timetables. Before the modern clock face was standardized during the Industrial Revolution , many other face designs were used throughout the years, including dials divided into 6, 8, 10, and 24 hours.