How do I get a 1 50000 map?

Look for the NGA Foreign Maps button (includes domestic NGA maps). In the “Filter by Country” box, select USA and the appropriate state. Click on “+VIEW FILTERS” to toggle on additional filters. Under “Other Filters”, use the dropdown menu in the “Map Scale” box to select 1:50,000 (it’s near the top of the list).

What does 1 50 000 mean on the map?

A scale of 1 : 50 000 is used on many Ordnance Survey maps. This means that 1 cm on the map represents an actual distance of 50 000 cm (or 500 m or 0.5 km). To work out the distance in real life, we need to multiply this length by 50000. This gives 3 cm × 50000 = 150000 cm which is 1500 m or 1.5 km.

What is the contour interval on a 1 50000 map?

On the OS 1:50000 maps, contours are drawn at 10m contour intervals: i.e. if you go up or down 10m then you would cross a contour line. Every 50m there is a darker and thicker line shown, which is what we call an INDEX contour.

What is denoted in red star in metric maps?

(a) Red star indicates the epicentre position.

What is a 1 25000 map?

The basics. On a 1:25 000 map, such as an OS Explorer, one unit of length on the map represents 25,000 units on the ground. So 1cm on the map represents 25,000cm or 250 metres on the ground. On a 1:50 000 map, 1cm on the map represents 500 metres on the ground.

What does V mean on an OS map?

Vehicle
(V) Vehicle; (P) Passenger. Ferry. Narrow road with passing places.

How far apart are contour lines on a map?

Individual contour lines on a topographical map are a fixed interval of elevation apart known as a contour interval. Common contour intervals are 5, 10, 20, 40, 80, or 100 feet. The actual contour interval of a map depends upon the topography being represented as well as the scale of the map.

Which is the oldest surviving topographical map?

The Turin Papyrus Map
The Turin Papyrus Map is an ancient Egyptian map, generally considered the oldest surviving map of topographical interest from the ancient world.

How big is a grid square on a 1 25000 map?

All OS maps are criss-crossed by vertical and horizontal grid lines (coloured blue on OS Explorer maps) which are 4cm apart on 1:25,000 scale maps and 2cm apart on the 1:50,000 scale. A grid reference uses six figures to identify a particular spot on a map that is 100 metres square.