The ST1892 Square Kilometre

ST1892 National Grid Square

Based in the South Wales East region of Scotland.

The ST1892 square kilometre intersects with the settlements of Cwmfelinfach & Ynysddu.

ST1892 is within the post town of Newport, Monmouthshire.

The square is within Caerffili - Caerphilly council.

The Point of Origin (0,0) is 371.47 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for ST1892

If you purchase a map through the links below, we may earn an affiliate commission.

Map Series	link	Ordnance Survey
Explorer 1:25,000 166 Rhondda and Merthyr Tydfil	Shop for this map on amazon.co.uk
Landranger 1:50,000 171 Cardiff & Newport	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey

This extract is taken from the Ordnance Survey six-inch to the mile series surveyed from 1888-1913. The scale is 1:10,560.

The Square overlayed over the map represents the extent of ST1892 and the vertical and horizontal line divides the square into four quadrants

Dividing the ST1892 Square to get a six figure Grid Reference

A helpful reminder for calculating grid references is across the landing and up the stairs.

For example if your house was located in a square that in the fourth square across and sixth square up and you wanted to work out its six figure grid refence.

First, You would divide the four figure grid reference into three parts. ST , 18 and 92

Count across starting with zero. This would give you three. Make a note that X for Across (A Cross) = 3.

Count up starting with zero. This would give you five. Make a note that Y = 5.

So to put it together ST + 18 + 3 + 92 + 5 would give you the six figure grid reference of ST183925

ST	18		92
ST	18	3	92	5

A six figure grid reference would be accurate to 10 metres. To achieve a greater level of accuracy this 10 metre square would be divided into a grid 10 by 10 and the process repeated.

This would produce an 8 figure grid reference that would be accurate to a square metre!

Corner	Latitude	Longitude	Easting	Northing
South West Corner	51.620827	-3.186099	318000	192000
South East Corner	51.620827	-3.171423	319000	192000
North West Corner	51.629962	-3.186099	318000	193000
North East Corner	51.629962	-3.171423	319000	193000