Dave's ESL Cafe's Student Discussion Forums

[Tony 1963]

Hi,

I read the following from a British Textbook (I copied it precisely here):

�Many geodetic datum points used for mapping, surveying and navigation are defined to provide a more precise fit over a restricted geographical area, the UK Ordnance Survey (OSGB 1936), the British National Grid for example.�

My question is, is the phrase "the British National Grid" an appositive of "the UK Ordnance Survey"? Or, is "the British National Grid" and "the UK Ordnance Survey" the same thing or two things here?

Thanks.
Tony

[Anuradha Chepur]

I presume they are two different things.

[Tony 1963]

Thanks. But in that case, they should use "for examples" instead of "for example." Am I right?

Tony

[Anuradha Chepur]

"for example," used in this way (as for instance) is always singular, no matter how many examples follow.

You can say for examples as part of the idea as in "Look on the net for examples of such sentences."

The UK Ordnance Survey maps use the British National Grid reference system, the Wikipedia says.