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. The instrument can be as a whole, or made on the spot with individual sockets (called trammel points) and any suitable beam.
14-662: Not to be confused with Trammel (disambiguation) . Trammell is both a surname and a given name. Notable people with the name include: Given name [ edit ] Trammell Crow (1914–2009), American property developer Surname [ edit ] Alan Trammell (born 1958), American baseball shortstop Austin Trammell (born 1998), American football player Bobby Lee Trammell (1934–2008), American rockabilly singer and politician Bubba Trammell (born 1971), American baseball outfielder Charles M. Trammell (1886–1967), judge of
28-486: A horse into a lateral ambling gait Trammel hook , a kind of adjustable pot hook hung in a chimney Elliptic trammel , a tool for drawing ellipses Trammel, a beam compass consisting of with metal points clamped to a beam Places [ edit ] Trammel, Virginia Trammels , Texas, United States People [ edit ] Allen Trammell (born 1942), American football player Joel Trammell (born 1965), American businessman Trammell , both
42-412: A lockable rod connector. Trammels or trammel points are the sockets or cursors that, together with the beam, make up a beam compass. Their relatively small size makes them easy to store or transport. They consist of two separate metal pieces (approx. 2 + 1 ⁄ 2 in × 5 in × 1 ⁄ 2 in (6 cm × 13 cm × 1 cm)) that are usually connected by
56-415: A needle, for the centre of the radius, and the other holds either a lead clutch, or an inking nib. There are older variants which use a wooden beam. Another similar type is a Machinist or Engineers beam compass, which uses scribing points only, similar to ones used by woodworkers, except that its fine adjustment is generally more refined. These beam compasses can be extended by adding press-in rods, or by using
70-420: A piece of wood, The wood timber is not included in the purchase of the trammel points. It can be ripped on a table saw. A lumber yard or woodworking store should have a piece readily available to fit the opening also, metal or pipe. They work like a scratch awl. As for any compass , there are two uses. The beam compass is used to scribe a circle , either by drawing with lead, penning by ink, or scratching with
84-519: A sharpened point. The radius can be adjusted by sliding the metal point holder across a wood beam or metal rod, and locking it by turning a knob at the desired location. Some have a fine radius adjustment. The threaded adjustment is similar to that of a Screw . The only limitation is the rigidity of the wood beam or metal rod being used. Longer wooden beams tend to sag depending on the species of wood used. Metal rods can be used as an alternative, but they also have length limitations. Some trammel sets include
98-447: A support roller for attachment at mid span of the beam or rod, to take out the sag. Trammel points score a precise line by using a sharpened point, or draw a line using a lead clutch, or an ink nib. When the circular knob is turned, it micro adjusts the radius of the circle. On some, a spring and screw mechanism locks the compass at the precise desired location. Turning clockwise decreases the radius while turning counterclockwise increases
112-620: A surname and a given name Other uses [ edit ] Trammel v. United States Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Trammel . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Trammel&oldid=1238787149 " Categories : Disambiguation pages Disambiguation pages with surname-holder lists Place name disambiguation pages Hidden categories: Short description
126-439: Is different from Wikidata All article disambiguation pages All disambiguation pages Beam compass A draftsman's beam compass consists of a set of points and holders, mounted on a plated brass, aluminum, or German 'silver' rod. One end is generally locked down at the end of the rod, while the other has both rough and fine adjustments, though some are opposite in construction. The locked tip holder consists of
140-499: Is different from Wikidata All set index articles Trammel (disambiguation) (Redirected from Trammel (disambiguation) ) [REDACTED] Look up trammel in Wiktionary, the free dictionary. Trammel or Trammels or Trammell may refer to: Devices [ edit ] Trammel , a kind of fishing net Trammel, a historical kind of shackle or hobble used to force
154-713: The United States Board of Tax Appeals Dennis Trammell (born 1982), American basketball player Jeffrey Trammell (born 1950), American lobbyist and political consultant Joel Trammell , (born 1965) American businessman Lloyd Trammell (born 1953), American inventor Park Trammell (1876–1936), American politician Pat Trammell (1940–1968), All-American quarterback Sam Trammell (born 1969), American actor Taylor Trammell (born 1997), American baseball outfielder Terrence Trammell (born 1978), African American track and field athlete [REDACTED] Name list This page or section lists people that share
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#1732872233725168-406: The next location. The circle cutter is a basic variation of the beam compass. There are many types of circle cutters. This cutter is used primarily to score a circular pattern in the drywall to fit over recessed lighting in the ceiling. The tool consists of a square shank with a sliding pivot that is locked into the desired location with a turn knob. The shank is graduated into 16 units and each unit
182-412: The radius slightly. A beam compass can also be used to make a series of repetitive measurements in a precise manner; the same as using a divider. Each point is rotated 180° along a straight line or large circle, and this process is repeated until the desired measurement or division is reached. The indentation created by the sharp point of the trammel is easily seen and makes a precise point to reference to
196-426: The same given name or the same family name . If an internal link led you here, you may wish to change that link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Trammell&oldid=1244274274 " Categories : Given names Surnames German-language surnames Hidden categories: Articles with short description Short description
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