ST02051101 microscope Boom Stand

ST02051101 microscope Boom Stand Vertical Post Height: 384mm. Vertical Post Dia.: diameter 37.2mm. Horizontal Arm Length: 544mm. Horizontal Dia.: diameter 37.2mm. Mounting Hole on the End of Horizontal Arm: 5/8? End Adapter. Base Dimensions: 285x260x15mm.