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2. Surveyor's wheel - Wikipedia

   en.wikipedia.org/wiki/Surveyor's_wheel

   Otherwise, the distance the wheel traveled is the circumference of the wheel multiplied by the fraction of a full turn. In the figure on the right, the blue line is the reference starting point. As the wheel turns during measurement, it is seen that the wheel sweeps out an angle of ⁠ 3 π / 4 ⁠ radians, which is equal to 135 degrees or ...

3. Wheel sizing - Wikipedia

   en.wikipedia.org/wiki/Wheel_sizing

   Wheels with Asanti 28 in (710 mm) rims on a police Hummer H2 car. The wheel size is the size designation of a wheel given by its diameter, width, and offset. The diameter of the wheel is the diameter of the cylindrical surface on which the tire bead rides. The width is the inside distance between the bead seat faces.

4. Axle track - Wikipedia

   en.wikipedia.org/wiki/Axle_track

   Track (measured between center line of wheels) In automobiles (and other wheeled vehicles which have two wheels on an axle), the axle track is the distance between the hub flanges on an axle. [1] Wheel track, track width or simply track refers to the distance between the centerline of two wheels on the same axle. In the case of an axle with ...

5. Bicycle and motorcycle geometry - Wikipedia

   en.wikipedia.org/wiki/Bicycle_and_motorcycle...

   The measurement is considered positive if the front wheel ground contact point is behind (towards the rear of the bike) the steering axis intersection with the ground. Most bikes have positive trail, though a few, such as the two-mass-skate bicycle and the Python Lowracer, have negative trail.

6. List of gear nomenclature - Wikipedia

   en.wikipedia.org/wiki/List_of_gear_nomenclature

   Offset. Offset is the perpendicular distance between the axes of hypoid gears or offset face gears. [1] In the adjacent diagram, (a) and (b) are referred to as having an offset below center, while those in (c) and (d) have an offset above center. In determining the direction of offset, it is customary to look at the gear with the pinion at the ...

7. Gunter's chain - Wikipedia

   en.wikipedia.org/wiki/Gunter's_chain

   Gunter's chain (also known as Gunter's measurement) is a distance-measuring device used for surveying. It was designed and introduced in 1620 by English clergyman and mathematician Edmund Gunter (1581–1626). It enabled plots of land to be accurately surveyed and plotted, for legal and commercial purposes.

8. List of interactive geometry software - Wikipedia

   en.wikipedia.org/wiki/List_of_interactive...

   Interactive proof, diagram checking, teacher/student models, labels with dynamic placeholders Geometry Expressions Yes No Yes Yes No No Yes Yes (Interactive HTML5/JS Apps) Yes No Symbolic calculations, which can be copied as input for CAS, TeX, and source code in 21 formats/languages. Functions. Arcs on any function or curve.

9. Pinwheel calculator - Wikipedia

   en.wikipedia.org/wiki/Pinwheel_calculator

   A pinwheel calculator is a class of mechanical calculator described as early as 1685, and popular in the 19th and 20th century, calculating via wheels whose number of teeth were adjustable. These wheels, also called pinwheels, could be set by using a side lever which could expose anywhere from 0 to 9 teeth, and therefore when coupled to a ...