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A circumferentor, or surveyor's compass, is an instrument used in surveying to measure horizontal angles. It was superseded by the theodolite in the early 19th century. [1] A circumferentor consists of a circular brass box containing a magnetic needle, which moves freely over a brass circle, or compass divided into 360 degrees.
[1] [2] Other names for the tool include adjustable square, combo square, and sliding square. The most common head is the standard head, which is used as a square for marking and testing 90° and 45° angles. [3] The other common types of head are the protractor head, and the centre finder head. [4]
The 1 iron, or driving iron, is the lowest lofted and longest iron (14 or 16 degrees of loft), although Wilson did make a 0 iron for John Daly. [citation needed] Often called a butter knife because of how it looks, the 1 iron has the least surface area on its face and so is commonly regarded as the most difficult club in the bag to hit.
Many material or standard specifications include a number of different UNS numbers that may be used within that specification. For example: UNS S30400 (SAE 304, Cr/Ni 18/10, Euronorm 1.4301 stainless steel) could be used to make stainless steel bars ( ASTM A276 ) or stainless steel plates for pressure vessels ( ASTM A240 ) or pipes ( ASTM A312 ).
A plate showing the uniform of a U.S. Army first sergeant, circa 1858, influenced by the French army. The military uniforms of the Union Army in the American Civil War were widely varied and, due to limitations on supply of wool and other materials, based on availability and cost of materials. [1]
However, if they are mounted on a suitable scale the instrument may also be used as an inclinometer to measure angles to the vertical. Ancient Egyptians used a plumb line attached to the top outer part of a tool resembling a letter E ; when placed against a wall, the plumb line would indicate a vertical line.
As thousands of rockets have rained down on Israel since the Hamas attack early Saturday, the country has been relying once again on the Iron Dome system to protect its citizens.
The iron with up to three dots allows for ironing. The number of dots are assigned temperatures: one prescribes 110 °C (230 °F), two for 150 °C (302 °F) and three for 200 °C (392 °F). An iron with a cross prohibits ironing.