Alidade
An alidade or a turning board is a device that allows one to sight a distant object and use the line of sight to perform a task. This task can be, for example, to triangulate a scale map on site using a plane table drawing of intersecting lines in the direction of the object from two or more points or to measure the angle and horizontal distance to the object from some reference point's polar measurement. Angles measured can be horizontal, vertical or in any chosen plane.
- Trademark classification
- A trademark classification is a way the trademark examiners and applicants' trademark attorneys arrange documents, such as trademark and service mark applications, according to the description and scope of the types of goods or services to which the marks
- Gaps and gores
- Gaps and gores are portions of land areas that do not conform to boundaries found in cadastre and other land surveys based upon imprecise measurements and other ambiguities of metes and bounds. A gap, also known as a hiatus, occurs where the descriptions
- Military operations area
- A military operations area (MOA) is an airspace established outside Class A airspace to separate or segregate certain nonhazardous military activities from IFR Traffic and to identify for VFR traffic where these activities are conducted. Similar
- Radio latino
- A radio latino is a measuring instrument used in surveying and military engineering starting in the 16th century. It gets its name from the inventor, Latino Orsini. The radio latino can be considered a kind of geometric square
- Elton's quadrant
- An Elton's quadrant is a derivative of the Davis quadrant. It adds an index arm and artificial horizon to the instrument. It was invented by John Elton a sea captain who patented his design in 1728 and published details of the instrument in the
- Current use
- Current use is a phrase used to describe the present condition of land use and corresponding scheme for property tax incentives for qualifying land owners who wish to preserve open space and avoid having their property assessed at the "best and highest
- Level staff
- A level staff, also called levelling rod, is a graduated wooden or aluminium rod, used with a levelling instrument to determine the difference in height between points or heights of points above a vertical datum. It cannot be used without a leveling
- Plane table
- A plane table is a device used in surveying site mapping, exploration mapping, coastal navigation mapping, and related disciplines to provide a solid and level surface on which to make field drawings, charts and maps. The early use of the name plain table
- Aeronautical chart conventions (United States)
- This article describes the graphic conventions used in Sectional charts and Terminal area charts published for aeronautical navigation under Visual Flight Rules in the United States of America. The charts are published "in accordance with Interagency Air
- Pushkin (crater)
- Pushkin is a crater on Mercury. Its name was adopted by the International Astronomical Union (IAU) in 1976. Pushkin is named for Russian poet Alexander Pushkin