Weighing scale
The balance (also balance scale, beam balance and laboratory balance) was the first mass measuring instrument invented. In its traditional form, it consists of a pivoted horizontal lever with arms of equal lengththe beamand a weighing pan suspended from each arm (hence the plural name ""scales" for a weighing instrument). The unknown mass is placed in one pan and standard masses are added to the other pan until the beam is as close to equilibrium as possible. In precision balances, a more accurate determination of the mass is given by the position of a sliding mass moved along a graduated scale. Technically, a balance compares weight rather than mass, but, in a given gravitational field (such as Earth's gravity), the weight of an object is proportional to its mass, so the standard masses used with balances are usually labeled in units of mass (e.g. g or kg).
Sensation Seeking Scale
The first Sensation Seeking Scale (SSS) was created by Martin Zuckerman and others in 1964. This was considered Form I and Form II was similar, though slightly revised. Analysis and use of these two forms showed that there was more than one dimension to sensation seeking behavior. This paper found that there were four components to sensation seeking thrill, social, visual and antisocial. Form III was the introduction of an experimental form with 113 items on it. In 1971, the scale was further revised to From IV and the sensation seeking components were revised with it to include: thrill, experience, disinhibition and boredom susceptibility. This scale also had some reliability issues and the scoring and so in 1978 it was revised one more time to the current Form V. In 1993 a new scale was developed for children. The scale slightly changed the factors to thrill and adventure seeking, drug and alcohol attitudes and social disinhibition.