8.33KHz spacing - only in aviation.
Most ground and marine sets use a 12.5KHz spacing * 
Or so my Spectrum Manager explained to me, all the while shaking his head sadly.
And of course, different national authorities reserve different portions of the same band for different purposes. So please don't use your US radio set, say, anywhere in East or South-East Asia or in Australasia 'coz you'll be all over other people's frequency allocations.
* BTW, that's respectively one-third and one-half the original 25MHz spacing