- ORDNANCE SURVEY GRIDS PC
- ORDNANCE SURVEY GRIDS PLUS
- ORDNANCE SURVEY GRIDS PROFESSIONAL
- ORDNANCE SURVEY GRIDS SERIES
These are still available in traditional sheet form.
ORDNANCE SURVEY GRIDS SERIES
Small-scale mapping for leisure use includes the 1:25,000 "Explorer" series, the 1:50,000 "Landranger" series and the 1:250,000 road maps.
ORDNANCE SURVEY GRIDS PROFESSIONAL
(The latter superseded the 1:10,560 "six inches to the mile" scale in the 1950s.) These large scale maps are typically used in professional land-use contexts and were available as sheets until the 1980s, when they were digitised. The Survey's large-scale mapping comprises 1:2,500 maps for urban areas and 1:10,000 more generally. Ordnance Survey mapping is usually classified as either " large-scale" (in other words, more detailed) or "small-scale".
ORDNANCE SURVEY GRIDS PLUS
It produces digital map data, online route planning and sharing services and mobile apps, plus many other location-based products for business, government and consumers. Paper maps for walkers represent only 5% of the company's annual revenue. It was also a member of the Public Data Group.
The Ordnance Survey Board remains accountable to the Secretary of State for Science, Innovation and Technology. Since 1 April 2015, Ordnance Survey has operated as Ordnance Survey Ltd, a government-owned company, 100% in public ownership. There was also a more general and nationwide need in light of the potential threat of invasion during the Napoleonic Wars. The agency's name indicates its original military purpose (see ordnance and surveying), which was to map Scotland in the wake of the Jacobite rising of 1745. Ordnance Survey ( OS) is the national mapping agency for Great Britain. (Although the National Grid covers a portion of Ireland Irish grid references are usually given using a different system.Pollokshaws on Roy's Military Survey of Scotland (1747–1755) * as defined on of A Guide to Coordinate Systems in Great Britain Note that these boundaries are intentionally only approximate and should NOT be treated as definitive site boundaries. If you subsequently change the browser window size you can re-fit GAGR to it using the "Fit to Window" button (top-left).īoundaries courtesy of the BRMC which maintains them. GAGR fits to the browser's window size when started. Clicking on a boundary will tell you which VC it is. If you want to clear all the VCs, select the second option "Clear Vice-Counties".
ORDNANCE SURVEY GRIDS PC
NOTE: It takes a while to download to your PC the large files defining some VCs, so you may see a significant delay before a boundary appears - please be patient. The "Toggle Vice-County" selector turns a Vice-County boundary on and off each time that county is selected. (Currently it goes to the first matched place name, but a choice may eventually be offered - bear with me). " box can be used to go to a Grid reference (e.g. (Remember to actually "go to" each newly created web-address containing a new gridref otherwise your browser will just bookmark the previous address again). Then use your browser's normal bookmarking method to remember it for future use. The following is now the best way:Īdd "?gr=XXXXXX" to the end the GAGR web address, replacing XXXXXX with your desired gridref, e.g.
The "Get The Marker" button moves the marker to the centre of the left map, so match the maps first.īookmarking: Due to differences between browsers as to how they support bookmarks I have abandoned the previous method. If you've found the place you wanted using the right map, you can move the left map to it using the "Match Left Map to Right Map" button. (The OS zoom can still be changed manually of course). The zoom level of the right map can be locked to its current level so that it doesn't change when the left map is zoomed. The right map tracks the left map whenever it is zoomed, panned or the marker moves, but the right map can be can be zoomed and panned on its own. (OS limits the number of map tiles accessed to 100,000 per day, so the right map will stop working if this is reached). The right map shows Ordnance Survey (OS) maps of different scales according to the zoom amount. The Vice-counties, VC30 and Bedfordshire boundaries only show on the left map (at present.) On the left map press "Satellite" for aerial photos only, or "Map" for Google Maps only. Please do not record wildlife using 2km, 5km or 10km grid refs as they are too vague. The grid refs will appear on the right, and the corresponding boxes are drawn on both maps. (The blue marker on the right map cannot be dragged). Drag the red marker on the left map to where you want a National Grid reference*.
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