Badab-e Surt

What the code says

The Grid Point Code for Badab-e Surt is #J4TT1-PN4T2. It names a cell 2.56 m north to south and 2.75 m east to west, centred on 36°21'16.96"N, 53°51'22.98"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

Range of stepped travertine terraces and springs in Sari County, Iran

Code

#J4TT1-PN4T2

With a check character

#J4TT1-PN4T2*N

Short form

PN4T2

Cell centre

36.354712, 53.856384

Cell size

2.56 m by 2.75 m

Region

Mazandaran Province

Country

Iran

How to give this address

On a sign, a form or a delivery note

The whole code, #J4TT1-PN4T2. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Mazandaran Province

Badab-e Surt PN4T2: 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 4.3 km east or west of Badab-e Surt. 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

#J4TT1-PN4T2*N. 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 43 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. TJ4TTMetropolitan area40 km by 43 km
2. 1J4TT1District8 km by 8.61 km
3. PJ4TT1PSuburb1.6 km by 1.72 km
4. NJ4TT1PNA few streets320 m by 344 m
5. 4J4TT1PN4Building64 m by 68.9 m
6. TJ4TT1PN4TEntrance12.8 m by 13.8 m
7. 2J4TT1PN4T2Doorway2.56 m by 2.75 m

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