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53 Degrees North Map and Compass Reading Workshop 2012
Transcript of 53 Degrees North Map and Compass Reading Workshop 2012
Degrees from 0 to 360
Silva Type 4 Compass
Lines connecting points of equal elevation
1000m x 1000m
1km x 1km
10m elevation difference
Close = steep ground
1cm = 50,000cm
1cm = 500m
2cm = 1km
2mm = 100m
Lines joining areas of equal elevation
Spaced = gentle elevation difference
Each National Grid Square is further divided into 100 boxes of 1km x 1km, as represented on your map by intersecting grid lines.
Running East 0 - 99
Start from sea leval @ zero
How reliable are they?
Details of features
When map was published
Additional information to assist navigation
Each box is 1km x 1km
Running North 0 - 99
Highest point in a given area
Used for trigonometrical surveying
Grid Reference Number
Map and Compass 1
The true art of navigation is the ability to read, understand and visualise a journey from a map into reality on the ground.