Product Highlights Plastic Body - A 1" thick solid acrylic block, virtually unbreakable It is stable and free of the danger of distortion Drilled Bore - Permanently free of bends - never requires recalibration due to distortion Reflective Chrome Finish Scales - Easily eliminates parallax errors in reading Adjustable, with thumbscrew locking for easy zeroing (Model 125 AV uses screw plunger to adjust zero setting) Red Gage Fluid - .826 specific gravity Forms a well-shaped, easy-to-read meniscus - the result of high wetability Leveling Adjustment - Screw allows quick, accurate leveling Integral ground glass bubble level provides ready reference