Search results
Results from the WOW.Com Content Network
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 ...
His development preceded the sextant and was motivated by the need to create a superior surveying instrument. [3] The reflecting circle is a complete circular instrument graduated to 720° (to measure distances between heavenly bodies, there is no need to read an angle greater than 180°, since the minimum distance will always be less than 180°).
The whirly tube, corrugaphone, or bloogle resonator, also sold as Free-Ka in the 1960s-1970s, is an experimental musical instrument which consists of a corrugated (ribbed) plastic tube or hose (hollow flexible cylinder), open at both ends and possibly wider at one end (), the thinner of which is rotated in a circle to play.
Ken Butler makes odd-shaped, guitar-like instruments made out of trash, rifles and other material. He also builds violins in eccentric shapes. Cor Fuhler (1964) is a Dutch/Australian improvising musician, composer and instrument builder, known for his pioneering extended piano techniques. He created the keyolin in the 1990s. The keyolin is a 2 ...
The first is an instrument shaped somewhat like a horn, in that it is formed in a circle. It has piston valves and is played with the right hand on the valves. Manufacturing of this instrument sharply decreased in the middle of the twentieth century, and this mellophone (or mellophonium) rarely appears today.
The instrument is usually held by a loop of some form of thread or wire at the top curve, to enable the triangle to vibrate and it is struck with a metal rod called a "beater". The triangle theoretically has indefinite pitch , [ 1 ] and produces a plurality of overtones when struck with an appropriate beater.
Instruments classified by Hornbostel–Sachs as struck or friction idiophones, struck or friction membranophones or struck chordophones. Where an instrument meets this definition but is often or traditionally excluded from the term percussion this is noted. Instruments commonly used as unpitched and/or untuned percussion.
The geometric quadrant is a quarter-circle panel usually of wood or brass. Markings on the surface might be printed on paper and pasted to the wood or painted directly on the surface. Brass instruments had their markings scribed directly into the brass. For marine navigation, the earliest examples were found around 1460.