Horizontal telescope combination accepting theodolites and sextants - has telescope and scales rocker as indicating instrument comprising two lever arms and weight

摘要

Horizontal telescope combination has telescope and scales rocker as indicating instrument comprising two lever arms and weight. The horizontal indication is in the lens image plane or in the optic axis of the telescope. Two vertical lever arms are mounted on a shaft and rotate with very little friction. One lever is shorter than the other. A weight is suspended from the shorter lever, so that this arm always aligns itself in the vertical by the force of the weight. The longer and lighter lever itself in the horizontal. A short indicating wire is fixed at the end of the longer lever.