Kaali crater

What the code says

The Grid Point Code for Kaali crater is #PKHF1-NML7T. It names a cell 2.56 m north to south and 1.79 m east to west, centred on 58°22'21.98"N, 22°40'09.98"E, 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

Meteorite crater in Estonia, main crater of a crater field

Code

#PKHF1-NML7T

With a check character

#PKHF1-NML7T*F

Short form

NML7T

Cell centre

58.372773, 22.669440

Cell size

2.56 m by 1.79 m

Region

Saare County

Country

Estonia

How to give this address

On a sign, a form or a delivery note

The whole code, #PKHF1-NML7T. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Saare County

Kaali crater NML7T: 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 2.8 km east or west of Kaali crater. 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

#PKHF1-NML7T*F. 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 28 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. FPKHFMetropolitan area40 km by 28 km
2. 1PKHF1District8 km by 5.6 km
3. NPKHF1NSuburb1.6 km by 1.12 km
4. MPKHF1NMA few streets320 m by 224 m
5. LPKHF1NMLBuilding64 m by 44.8 m
6. 7PKHF1NML7Entrance12.8 m by 8.97 m
7. TPKHF1NML7TDoorway2.56 m by 1.79 m

More in Estonia

• Tallinn
• Jägala Waterfall
• Lahemaa National Park