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A beam compass is a compass with a beam and sliding sockets or cursors for drawing and dividing circles larger than those made by a regular pair of compasses. [1] The instrument can be as a whole, or made on the spot with individual sockets (called trammel points) and any suitable beam.
A beam compass is an instrument, with a wooden or brass beam and sliding sockets, cursors or trammels, for drawing and dividing circles larger than those made by a regular pair of compasses. [2] Scribe-compasses [3] is an instrument used by carpenters and other tradesmen. Some compasses can be used to draw circles, bisect angles and, in this ...
The beam line is designed to transport beams up to a momentum of 280 GeV/c. Usually, five different beams are used by COMPASS: positive and negative muon beams with a nominal momentum of 160 GeV/c or 200 GeV/c, positive hadron beams with a nominal momentum of 190 GeV/c and a composition of 75% protons, 24% pions and 1% kaons, negative hadron ...
Another form, the beam compass, has the pivot point and pen holder joined by a trammel bar, useful when drawing very large radius arcs. Often a circle template is used instead of a compass when predefined circle sizes are required.
Dividing engine at the Museo Galileo in Florence.. There has always been a need for accurate measuring instruments. Whether it is a linear device such as a ruler or vernier or a circular device such as a protractor, astrolabe, sextant, theodolite, or setting circles for astronomical telescopes, the desire for ever greater precision has always existed.
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