These pieces were once owned by the Museum of Science & Industry and used in their study mass spectometry to identify unknown compounds through molecular weight distribution.
26.5"L x 21"W x 68.5"H - Rack Style (the left most, and center racks)
~25"L x 24"W x 69.5"H - Cabinet style (the rack on the far right)
3 available total - as you can see from the images, each rack varies slightly
