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# CROSS-SECTION PAPER

 Paper ruled with two sets of parallel lines, useful as an aid in plotting Cartesian coordinates. Usually, the two sets are mutually perpendicular.

## Related Terms

### COORDINATE PAPER

Paper ruled with lines to aid in the plotting of coordinates. In its most common form, it has two sets of parallel lines, usually at right angles to each other, when it is also called CROSS- SECTION PAPER. A type ruled with two sets of mutually-perpendicular, parallel lines spaced according to the logarithms of consec- utive numbers is called logarithmic coordinate papa or semilogarithmic coordinate paper as both or only one set of lines is spaced logarithmically. A type ruled with concentric circles and radial lines from the common center is called polar coordinate paper. Also called GRAPH PAPER.

### SEMILOGARITHMIC COORDINATE PAPER

Paper ruled with two sets of mutually-perpendicular parallel lines, one set being spaced according to the logarithms of consecutive numbers, and the other set uniformly spaced.

### ATA

Automatic Tracking Aid electronic plotting device for radars

### PARALLEL INDEXING

The use of rotating parallel lines overlayed on a radar display to aid in piloting.

### GRATICULE

1. The network of lines representing parallels and meridians on a map, chart, or plotting sheet. A fictitious graticule represents fictitious parallels and fictitious meridians. 2. A scale at the focal plane of an optical instrument to aid in the measurement of objects.

### EPA

Electronic Plotting Aid electronic plotting device for radars

### ANTIRESONANCE

See parallel resonance. A radar set designed to give warning of possible collisions during movements of ships or aircraft.

### ELECTROGRAPH

Any plot, graph, or tracing produced by the action of an electric current on prepared sensitized paper (or other chart material) or by means of an electrically controlled stylus or pen.

### SHUNT

To connect in parallel or a parallel connection.

### Related questions

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