The Turku UBVRI Photopolarimeter (Turpol) was built at Turku Observatory
by V. Piirola, based on his earlier design of such a photo-polarimeter. The
current version has been in use at the NOT since March 1989.
TurPol is not a common-user instrument. Normal support at the telescope
is provided, but only limited trouble-shooting can be made by NOT staff.