Peel test measures the strength required to pull apart a bonded surface. It is useful in evaluating adhesives, adhesive tapes, or other attachment methods. The peel test is one of the early quantitative tests proposed for determining adhesion. A Jacquet type peel test is used to determine the peel strength of plated plastics. A major attraction of peel tests is their apparent practical simplicity. The peel test protocol used for flexible laminates has the purpose to provide guidance on the measurement of the peel strength.
A peep sight is a small round or oval disc with a hole in the middle. It is placed between the strands of the bowstring at eye level. A peep sight acts a rear sight, precisely aligning the bowstring and target. Slighting is more precise when two locations between the archer's eye and the bull's-eye aligned than when just one is aligned. It can improve aiming accuracy.