The SAS-1 Articulating heavy duty industrial-type boom stand comes with a 20mm diameter drop down mounting post to perfectly complement our EMZ (Zoom), EMT (Turret), EMF (Fixed) Series Stereo Microscope with the proper focus block. Lift Articulating Arm offers the greatest amount of reach along with ease to vertical positioning. The total arm length gives the user a total of 31" from the center of the vertical pole to the center of the focus block. Approximately 15 inches vertical travel, plus/minus 7.5 inches from horizontal, is controlled via an adjustable gas spring counter balance providing a "safe" lift and descent. The counter balance also allows "free floating" of objects from 0- 20 lbs. An ambidextrous vertical position lock is provided. The arm also accepts the industry standard 5/8" "Bonder" pin focus blocks, when an optional OS-LAEA is ordered. The SAS-1 provides complete flexibility for smooth left to right horizontal and vertical movement and adjustment. The SAS-1 flexibility, allows it to glide over the work surface with none of the binding inherent in other boom stands. It is now possible to scan a large flat area, such as a printed circuit board, by simply guiding the microscope with your hands. This is best made heavy Duty Boom stand from U.S.A. There is zero friction motion from precision machined into cast housings along with a sturdy solid 80 lbs. metal 13 inch x 13 inch x 1.5 inch base with heavy duty rubber feet and ergonomic handles provides an excellent solution for heavy duty and industrial applications requiring smooth friction free travel. The SAS-1 Articulating Heavy Duty Boom Stand is Meiji Techno America's most popular Ergonomic boom stand with vertical pillar, articulating arm and a 20mm drop down mounting post accepts industry standard focus blocks with a 20mm mounting hole. The SAS-1 is equipped with a 406.4mm (16") vertical pole. The SAS-1 offers minimal space requirement and greatest possible amount stability for EM stereo system up to 30 lbs. There is no loss of stability even at its furthest travel. The SAS-1 can swing out of the way easily, clearing the workstation for other tasks. The horizontal arm can be moved freely and smoothly left to right or can be securely locked into position with our spring loaded handle knobs. The vertical column is used to compensate for taller specimen heights to accommodate the working distances of different microscope bodies. Anti-rotation is stabilized by a locking pin on the vertical post. The SAS-1 Articulating Heavy Duty Boom stand provides a comfortable amount of space for large Solar panels to large semiconductor and electrical components. The SAS-1 is supported by a 80.00 lbs. base. This boom stand is an affordable; low cost with high quality safety features makes this boom stand unmatched value in its class. This stand has ample height and long reach to work on an inspect small to large parts under the microscope. Ergonomic flexibility, chemical resistant paint finish and corrosion resistant stainless steel columns make this boom stand an excellent choice in labs and production facilities.