Wikipedia picture of the day for April 26 5:13 PM E-BOOKS FOR YOU

A diagram of vernier calipers, a device used to measure the distance between two opposite sides of an object, showing the individual parts: Outside large jaws: used to measure external diameter or width of an object Inside small jaws: used to measure internal diameter of an object Depth probe: used to measure depths of an object or a hole Main scale in centimeters, marked every millimeter Main scale in inches, marked every 1/16 of an inch Vernier scale gives interpolated measurements to 1/20 of a millimeter Vernier scale gives interpolated measurements to 1/128 of an inch Retainer: used to block movable part to allow the easy transferring of a measurement Here the metric scale shows a distance of 2.475 cm between the jaw faces: the 0 mark on the vernier is between 2.4 and 2.5, and the 7.5 mark is the one best aligned with a mark on the main scale. Similarly, the inch scale shows (15)/16, or 125/128, of an inch. Diagram: Joaquim Alves Gaspar, modified by ed g2s Recently featured: HMAS Australia (D84) – Armenian Genocide – Cerambycinae Archive – More featured pictures...

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