• for Ø1" optics
• can be used as an optical mount and rotation stage
• accepts optics up to 9 mm thick
• continunous 360° rotation with 2° scale gradation
• lockable
• roller bearings design
• material: black anodized aluminium

Base of 840-0190 has beveled sides for fingers to rotate the platform by its knurled edge.

840-0190 Polarizer Holder can be transfomed into a rotation stage with a complementary insert platform 840-0190-A1, which should be ordered separately.

The platform has a pattern of M4 holes and a central Ø7-to-M6 hole. If you need to fasten to the central hole a unit with M4 mounting hole, you can slip an M4 screw through this Ø7-to-M6 combined hole (see the drawing for 840-0190-01).