vernier circular

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• Vernier scale — A vernier scale is an additional scale which allows a distance or angle measurement to be read more precisely than directly reading a uniformly divided straight or circular measurement scale. It is a sliding secondary scale that is used to… …   Wikipedia

• Caliper — For other uses, see Caliper (disambiguation). A vernier caliper …   Wikipedia

• Dividing engine — at the Michigan Museum of Surveying A dividing engine is a device specifically employed to mark graduations on measuring instruments. History There has always been a need for accurate measuring instruments. Whether it is a linear device such as a …   Wikipedia

• Transversal (instrument making) — Transversals are a geometric construction on a scientific instrument to allow a graduation to be read to a finer degree of accuracy. Transversals have been replaced in modern times by vernier scales. Contents 1 History 2 Linear transversals 3… …   Wikipedia

• Scientific revolution — This article is about a period in the history of science. For the process of scientific progress via revolution, proposed by Thomas Kuhn, see Paradigm shift …   Wikipedia

• Brown & Sharpe — is today a division of Hexagon Metrology, Inc., a multinational corporation focused mainly on metrological tools and technology. During the 19th and 20th centuries, Brown Sharpe was one of the most well known and influential firms in the machine… …   Wikipedia

• Micrometer — This article is about the measuring device. For the unit of length, see Micrometre. Outside, inside, and depth micrometers A micrometer (   …   Wikipedia

• Octant (instrument) — Octant. This instrument, labelled Crichton London, Sold by J Berry, Aberdeen, appears to have an ebony frame with ivory scale, vernier and signature plate. The index arm and mirror supports are brass. Rather than use a sighting telescope, this… …   Wikipedia

• Reflecting instrument — Reflecting instruments are those that use mirrors to enhance their ability to make measurements. In particular, the use of mirrors permits one to observe two objects simultaneously while measuring the angular distance between the objects. While… …   Wikipedia

• Slide rule — For other uses, see Slide rule (disambiguation). A typical ten inch student slide rule (Pickett N902 T simplex trig). The slide rule, also known colloquially as a slipstick,[1] is a mechanical analog computer. The slide rule is used primarily for …   Wikipedia

• Saw — For other uses, see Saw (disambiguation). Saw A crosscut hand saw about 620 mm (24 inches) long Classification Cutting Types Hand saw Back saw Bow saw Circular saw …   Wikipedia