A woodworking jig is a device used to control the blade of a saw or the motion of another tool that will cut or otherwise alter wood. Simple jigs can be made from wood, and they can be custom-built for specific woodworking functions; a person can also buy a prefabricated woodworking jig made from wood, plastic, or even metal.
Normally the size of the pupil is the same in each eye, with both eyes dilating or constricting together. The term anisocoria refers to pupils that are different sizes at the same time. The presence of anisocoria can be normal (physiologic), or it can be a sign of an underlying medical condition.
Emotions also play a role in the size of the pupils, when a cat is angry or aggravated the pupils constrict, when it is happy or frightened, they dilate. Pupils should be equal in size and when looked at with a bright light, they should both constrict quickly.ilated pupils can also be a symptom of an underlying problem. One or both pupils may be affected, when only one pupil is affected, the condition is known as anisocoria. Some conditions which can cause the pupils to remain dilated include: Feline dysatonomia (feline dilated pupil syndrome).