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A Jankó keyboard. The Jankó keyboard is a musical keyboard layout for a piano designed by Paul von Jankó, a Hungarian pianist and engineer, in 1882.It was designed to overcome two limitations on the traditional piano keyboard: the large-scale geometry of the keys (stretching beyond a ninth, or even an octave, can be difficult or impossible for pianists with small hands), and the fact that ...
Example of true position geometric control defined by basic dimensions and datum features. Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances via a symbolic language on engineering drawings and computer-generated 3D models that describes a physical object's nominal geometry and the permissible variation thereof.
List of musical scales and modes Name Image Sound Degrees Intervals Integer notation # of pitch classes Lower tetrachord Upper tetrachord Use of key signature usual or unusual ; 15 equal temperament
A material condition in GD&T. Means that a feature of size is at the limit of its size tolerance in the direction that leaves the most material on the part. Thus an internal feature of size (e.g., a hole) at its smallest diameter, or an external feature of size (e.g., a flange) at its biggest thickness. The GD&T symbol for MMC is a circled M.
G255S 1977-81 $360.00 Solid spruce top/quarter sawn, real wood marquetry rosette, triple laminated veneer head, Ebony fingerboard, rosewood back and sides, Jacaranda bridge, transverse fan type bracing, concert scale size of 260mm with a 52mm nut width
Date/Time Thumbnail Dimensions User Comment; current: 17:35, 6 November 2018: 64 × 64 (381 bytes): Ahecht: Horizontal lines are part of the feature control frame, not the modifier.
A 7/8 size (140 mm (5.5 in) octave span) keyboard was developed by Canadian Christopher Donison in the 1970s. This size, along with the 15/16 size (152 mm (6.0 in) octave span) and a smaller size (130 mm (5.1 in) octave span) have since been developed and marketed by Steinbuhler & Company in Pennsylvania.
Position tolerance (symbol: ⌖) is a geometric dimensioning and tolerancing (GD&T) location control used on engineering drawings to specify desired location, as well as allowed deviation to the position of a feature on a part.