'Northings' presentation slideshows

Distance measure

327 views • 25 slides

Longitude

Longitude. North - South Meridians base point of world system is Greenwich, England Iowa - approximately 93 0 West. Latitude. Measured from the Equator Iowa - approximately 42 0 North . Great circle distances (assume a round world).

208 views • 11 slides

Principles of a Grid Reference

Principles of a Grid Reference. Y. A. To find the position of A: 1. Indicate the distance along the X axis (5) 2. Indicate the distance along the Y axis (8) 3. The combination of X-Y is the location of A. (5,8). 9 8 7 6 5 4 3 2 1. X. X. 1 2 3 4 5 6 7 8. Y.

326 views • 8 slides

Another way of identifying the same point P is

Another way of identifying the same point P is. y. u. +P (. r , . ). r. u. x. This is known as a . POLAR . Coordinate System. FOR SURVEYING we use a slightly different form of notation . instead of . x,y we use E,N (. Easting, . Northing). N. +P (. E ,N). u. D. E. N.B.

161 views • 7 slides