2008年11月6日星期四

24-hour watch

A 24-hour watch is a wristwatch with an hour hand that completes a revolution every 24 hours. This type of watch is especially useful for airplane pilots, astronauts, members of the military, or anyone who uses a 24-hour clock.

The face may be arranged in either of two ways: with the 12 at the top (as on standard watch and clock faces) and the 24 at the traditional 6 o'clock position, or else rotated 180° with the 24 at the traditional 12 o'clock position and the 12 at the traditional 6 o'clock position (as pictured).

A 24-hour watch with multiple hour hands or a rotating bezel is particularly useful for displaying the time in multiple time zones. Rolex was asked to create what is considered to be the original version of this watch by Pan American Airlines in the 1950s, and as a result they made the Rolex GMT Master II.

A 24 hour watch with a compass card dial can be used to determine direction when set to local noon and used in conjunction with the sun. (See: Direction Finding Watch).

Many (but not all) current digital watches can be set to show the time in 24-hour format.

NOTE:

eva clogs / shoes, crocs


five pointed star gel insoles


fashion ,top quality,sport shoes,running shoes


hot transfer printed hoody sweater


hot and best sport shoes


high heel shoes,ladies shoes,dress shoes


fashionable high heel women's sandals


sport shoe & dmp shoe


ceramic plates for bulletproof vest


edhandy t shirt bape trousers


second hand clothing and shoes


cross hatch cotton denim pant


we sell neoprene dog vest


eva board with cutout slipper


front closure one piece bra


casual shoes plat sole shoes


men s leather dress shoes


lady size pvc forming slippers


cross hatch stretch denim pant


hand embroidered ladies fashion footwear


cargo pants mens cargo shorts


long sleeve turtle neck cardigan


in line roller skate shoe


ball dress ladies evening wear


laser cut one piece bra


black handmade embroidery leisure wear


felt sole hip fishing boots


Industrial Ceramic Fiber Insulation Materials


Rectangular Cast Iron Pipe Shoes


Venetian Blind Polyester Ladder Strings

没有评论: