Carrauntoohil

What the code says

The Grid Point Code for Carrauntoohil is #R0JXG-720X7. It names a cell 2.56 m north to south and 2.11 m east to west, centred on 51°59'56.02"N, 9°44'33.98"W, and it turns back into that cell on any phone or computer by arithmetic alone: no network, no account, no lookup table.

What it is

Highest mountain in Ireland

Code

#R0JXG-720X7

With a check character

#R0JXG-720X7*H

Short form

720X7

Cell centre

51.998895, -9.742771

Cell size

2.56 m by 2.11 m

Region

Munster

Country

Ireland

How to give this address

On a sign, a form or a delivery note

The whole code, #R0JXG-720X7. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Munster

Carrauntoohil 720X7: a name both people know, then the last five characters. They give back the exact code for anywhere within 4.0 km north or south and 3.3 km east or west of Carrauntoohil. Further away the same five name somewhere else, which is why the whole code is what goes on a sign.

Copied by hand, or read over a phone

#R0JXG-720X7*H. The character on the end catches any single mistyped symbol and any two neighbours swapped.

As a link or a square code

Open it on the map, move to the exact door, and add directions if the code needs help: "blue gate, second floor". The link and the square code carry them. Nothing is kept on this site.

From the city to the door

The first four characters name a cell about 40 km by 32.9 km here. Each one after that picks one of 25 inside the last, so the whole ten name a spot about the size of a doorway.

1. XR0JXMetropolitan area40 km by 32.9 km
2. GR0JXGDistrict8 km by 6.58 km
3. 7R0JXG7Suburb1.6 km by 1.32 km
4. 2R0JXG72A few streets320 m by 263 m
5. 0R0JXG720Building64 m by 52.6 m
6. XR0JXG720XEntrance12.8 m by 10.5 m
7. 7R0JXG720X7Doorway2.56 m by 2.11 m

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