I have a client called and has no info on coordinates furnished by a Borneo Surveyor on several Parcels...looks like they are in feet (not meters) Easting on 1st one is 2,644,049 and Northing is 5,497,849

All I can find is Projection: RSO East Malaysia (Borneo)
Datum: Timbalai 1948, Brunei; E. Malaysia (Sabah Sarawak)
Ellipsoid: Everest (Sabah Sarawak)

but this doesn't work...hits way west in ocean........can anyone familiar with this area tell me what datum/projection etc would plot these coordinates in Kalimantan? thanks

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Hey Timothy,

I'm not 100% sure on this but it will put your point about 70ks inland from Brunei. Use the RSO Projection of Timbalai but give it false easting of 2,000,000 and a false northing of 5,000,000. Below is a modified projection file that will work in Global Mapper. I can't confirm anything official but i believe it is common.


Thanks so much..this had occurred to me but hadn't latched onto anything in print like you found....just eyeballing what he sent me on GEarth,, this looks right-have a great day!!!!


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