Olympus U-POFW 4 Place 32MM Filter WheelOlympus U POFW 4 position 32mm filter wheel manual filter wheel with 2 rotatable positions for polarized light and optical accessory applications 4 position filter wheel holds up to four 32mm filters or optical elements for rapid manual switching 2 rotatable positions two of the four positions allow the installed filter or optical element to be rotated in place, enabling angular adjustment of waveplates, analyzers, or polarizers Made in Japan by