Changes

==Origin==

==Origin==

[https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] ''gauge'', from Anglo-French

[https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] ''gauge'', from Anglo-French

*[http://en.wikipedia.org/wiki/15th_century 15th Century]

*[https://en.wikipedia.org/wiki/15th_century 15th Century]

==Definitions==

==Definitions==

*1a :  a measurement (as of linear [[dimension]]) according to some [[standard]] or system: as (1) :  the distance between the rails of a railroad (2) :  the size of a shotgun barrel's inner [[diameter]] nominally [[expressed]] as the number of lead balls each just fitting that diameter required to make a pound <a 12-gauge shotgun> (3) :  the thickness of a thin material (as sheet metal or plastic film) (4) :  the diameter of a slender object (as wire or a hypodermic needle) (5) :  the fineness of a knitted fabric expressed by the number of loops per unit width

*1a :  a measurement (as of linear [[dimension]]) according to some [[standard]] or system: as (1) :  the distance between the rails of a railroad (2) :  the size of a shotgun barrel's inner [[diameter]] nominally [[expressed]] as the number of lead balls each just fitting that diameter required to make a pound <a 12-gauge shotgun> (3) :  the thickness of a thin material (as sheet metal or plastic film) (4) :  the diameter of a slender object (as wire or a hypodermic needle) (5) :  the fineness of a knitted fabric expressed by the number of loops per unit width

A '''caliper''' (British spelling also calliper, or in plurale tantum sense a pair of callipers) is a device used to [[measure]] the distance between two opposite sides of an object. A caliper can be as simple as a [[compass]] with inward or outward-facing points. The tips of the caliper are [[adjusted]] to fit across the points to be measured, the caliper is then removed and the distance read by measuring between the tips with a measuring tool, such as a ruler.

A '''caliper''' (British spelling also calliper, or in plurale tantum sense a pair of callipers) is a device used to [[measure]] the distance between two opposite sides of an object. A caliper can be as simple as a [[compass]] with inward or outward-facing points. The tips of the caliper are [[adjusted]] to fit across the points to be measured, the caliper is then removed and the distance read by measuring between the tips with a measuring tool, such as a ruler.

It is used in many fields such as [http://en.wikipedia.org/wiki/Mechanical_engineering mechanical engineering], [http://en.wikipedia.org/wiki/Metalworking metalworking], forestry, [http://en.wikipedia.org/wiki/Woodworking woodworking], [[science]] and [[medicine]].

It is used in many fields such as [https://en.wikipedia.org/wiki/Mechanical_engineering mechanical engineering], [https://en.wikipedia.org/wiki/Metalworking metalworking], forestry, [https://en.wikipedia.org/wiki/Woodworking woodworking], [[science]] and [[medicine]].

The earliest caliper has been found in the Greek [http://en.wikipedia.org/wiki/Giglio_Island Giglio] wreck near the Italian coast. The ship find dates to the 6th century BC. The wooden piece already featured a fixed and a movable jaw. Although rare finds, caliper remained in use by the [[Greeks]] and [[Romans]].

The earliest caliper has been found in the Greek [https://en.wikipedia.org/wiki/Giglio_Island Giglio] wreck near the Italian coast. The ship find dates to the 6th century BC. The wooden piece already featured a fixed and a movable jaw. Although rare finds, caliper remained in use by the [[Greeks]] and [[Romans]].

A bronze caliper, dating from 9 AD, was used for minute measurements during the Chinese [http://en.wikipedia.org/wiki/Xin_dynasty Xin dynasty]. The caliper had an inscription stating that it was "made on a gui-you day at new moon of the first month of the first year of the Shijian guo period." The calipers included a "slot and pin" and "graduated in inches and tenths of an inch."

A bronze caliper, dating from 9 AD, was used for minute measurements during the Chinese [https://en.wikipedia.org/wiki/Xin_dynasty Xin dynasty]. The caliper had an inscription stating that it was "made on a gui-you day at new moon of the first month of the first year of the Shijian guo period." The calipers included a "slot and pin" and "graduated in inches and tenths of an inch."

The modern [http://en.wikipedia.org/wiki/Caliper#Vernier_caliper vernier caliper], reading to thousandths of an inch, was invented by American Joseph R. Brown in 1851. It was the first [[practical]] [[tool]] for exact measurements that could be sold at a price within the reach of ordinary machinists.[http://en.wikipedia.org/wiki/Caliper]

The modern [https://en.wikipedia.org/wiki/Caliper#Vernier_caliper vernier caliper], reading to thousandths of an inch, was invented by American Joseph R. Brown in 1851. It was the first [[practical]] [[tool]] for exact measurements that could be sold at a price within the reach of ordinary machinists.[https://en.wikipedia.org/wiki/Caliper]

[[Category: General Reference]]

[[Category: General Reference]]