The FEISOL LB-75100 Leveling Base provides up to 30° of adjustment to your existing FEISOL Large classic CT-3371/3471 tripod. The base allows you to level the mounting platform of your tripod without having to make minute adjustments with the legs, and only adds 1.1" to the height of your tripod. You can quickly exchange your tripod's standard mounting plate for the leveling base. The leveling base provides a 3.1" mounting platform with a 3/8" mounting screw. Featuring an integrated bubble level for accuracy, the base is machined from solid aluminum alloy and anodized for corrosion and wear resistance.