The CCL has four working groups, one of which is run jointly between the CCL and the CCTF. Where access to working documents is restricted to working group members, a username and password are required.

		CCL-CCTF Frequency Standards Working Group (WGFS)
		CCL Working Group on the CIPM MRA (CCL-WG-MRA)
		CCL Working Group on Dimensional Nanometrology (CCL-WG-N)
		CCL Working Group on Strategic Planning (CCL-WG-S)

See also:

• CCL Discussion Groups