Stereo Microscope Ball Bearing Boom Stand

This ball bearing boom stand has the following dimensions:

• Base: 285mm (11.2") x 260mm (10.2") x 32mm (1.3"). Maximum distance from the vertical post to the end of the base is 235mm (9.3")
• Vertical Post: Outside Diameter is 37mm. Vertical post is 380mm (15") tall, a 225mm (8.9") extension post can be added. The vertical post has a lock ring on it.
• Horizontal Post: The two 20mm OD poles have smooth ball bearing movement. Each pole is 570mm (22.4") long from end to end.
• Focusing Attachment: 5/8" fitting for pin mount focusing holder. Your choice of no arbor, 20mm, 25mm or 32mm arbor. Select when checking out.
• Weight: 49 lbs. (22kg)