The internal mechanisms of locks are generally made of brass or die-cast zinc. The cam, which is the tongue that protrudes from the lock to secure it, is usually made of steel or stainless steel. The outer casing of a lock may be made of brass, chrome, steel, nickel or any other durable metal or alloy.
From Wikipedia, the free encyclopedia. Cognitive tests are assessments of the cognitive capabilities of humans and other animals. Tests administered to humans include various forms of IQ tests; those administered to animals include the mirror test (a test of visual self-awareness) and the T maze test (which tests learning ability).
Cognitive Function Test. This test is designed for those aged 50 to 70. It consists of four parts and it will take approximately 15 minutes to complete. Once you have started the test it is important that you are not disturbed and that you do not take a break. If you require glasses for computer screen work, please use them.