Abstract: A sundial apparatus is arranged wherein a sundial head mounts a semi-cylindrical sundial face mounting a vertical and horizontal cross hair to define time of day, as well as an associated weekly period during a solar year. The sundial face is mounted within a head member that in turn is rotatably mounted upon an upper rotater plate. The upper rotater plate is pivotally mounted between first and second "L" shaped support plates, and the "L" shaped support plate is rotatably mounted upon a mounting plate, with the mounting plate fixedly secured to a support member such as a post.

Abstract: An apparatus for measuring the acceleration of the head or thoracic regions of an anthropomorphic dummy used in auto crash testing which is characterized by a mounting arrangement which provides redundant data capability meeting the required government regulations. Three pairs of acceleometers are mounted within test site cavities provided in the crash dummy within the strict government standards to provide two sets of three accelerometers instead of one. Each accelerometer of each pair is accomodated within a mounting structure relative to required standard reference planes and within a supecified location relative to their sensitive axes such that the data obtained therefrom may be used to obtain acceptable redundant force signals for purposes of the crash test.