In order to safely operate crane and power industrial truck, the operator/individual is required to have the following; 20/20 vision (or corrected through glasses/contacts), have effective use of all four limbs, be of a height sufficient to operate controls and to have an unobstructed view of the work area, have coordination between eyes, hands, and feet, be free of known convulsion disorders and unconsciousness, and the ability to understand signs, labels, and instructions. Observing operation and verifying conformance of machined work pieces to specifications, using measuring instruments such as calipers, bore gages, pins and micrometers.