This is likely the down indicator used to keep a visual track of which down it is (the down marker can be wrong). By shifting the band from finger to finger after each down, the officials can immediately tell what down it is from the position of the bands.
Some umpires have another purpose for the band. They use it to keep track of where on the field (horizontally) the play started. So for a return to the previous spot (say for a penalty), there is a record of whether the play started at the left hashmark, the right hashmark or some general area of the middle of the field.
If you are talking about the side judge, he uses that to keep track of downs, much like the Umpire having the true "game clock". *All of the officials on a football game usually wear one of the down-indicators, although some wear two (one for downs, one to keep track of where the football was positioned - on the left, right, or between the hashmarks). Also, it is the line judge who usually holds the "official" time.
A wrist band is part of a football referee's uniform and is used to keep track of downs. For example, the band looped over the index finger means it's first down, over the middle, second down, and so on.
The bands are worn around the wrist by the referee and are used to keep track of what down it is by placing the loop that is attached to the wristband around the first, second, third or fourth finger. they look cool.
There called power morphers
A kind of wrist band with a wire attached to it and other end of wire attached to the body of CPU.
Kennedy key is used in case of wrist watch.
Take a platic measuring band,like used for clothing to measure and measure that way
Ice Watches usually have a rubber wrist band. The dial is made from plastic with rubber gaskets to waterproof the movement. They come in a variety of colors.
A wrist splint is used to stabilize or immobilize the wrist joint. The materials used for a wrist splint vary; some are quite hard such as a plastic splint, while others are quite soft such as an aluminum splint.
It is a part on the shield for a solider, mainly in the battle of Thermopylae. They would strap there wrists through a little wrist band and hold on to the grip right beside it for more balance.
There are various things in your home which can be used for wrist support. Anything hard and also flexible can be used to create a splint by wrapping the item and your wrist in a bandage.
Yes, "ring" is a common noun. It is a general term used to describe a circular band, often worn on a finger as jewelry or used for various purposes like signaling or decoration.
Finger spelling, or signing, is used by blind people.