[windows-7] How can I determine the sector size in windows?

How can I determine the Physical Sector Size (e.g. if i have an Advanced Format drive with 4,096 byte sectors rather than the legacy 512 byte sectors) in Windows 7?

I know that by clicking on a file and get properties we can find out the NTFS Cluster Size, but that's not the same as the hard-drive's sector size.

Note: We ask about Windows 7 because it (and Windows Vista SP1) understand the existence of 4096 Advanced Format hard drives.