HMC5883L Distance

Hi,Can I to mensure distance between two HMC5883L?

Use a ruler ?

I have no idea what you mean. Can you tell more ? In what situation ?

I have two arduino one with HMC5883L and other with the same HMC5883L.
The first arduino send to the second arduino through bluetooth sinal
the Azimuth and Pitch and Roll information.
Can i measure distance between them with that information?