Indicator Set with Magnetic Base Magnetic Base Features:. Fine adjustment. Base dimensions: 2 x 2-11/32 x 1-13/16. Also mounts test indicators with 1/4 post.. 85 lb. pull. On-Off lever release magnet.. V-base for placing on round surfaces.. X-Proof Indicator Features:. Travel: 1. Reading: .001. Continuous reading: 0-100. Tolerance markers. AGD Group 2, 2-1/4 dia.. Lugback and carbide point.. Robust, shockproof design.. Rubber bellows on stem. . O-ring seal on safety cap.. O-ring protection for bezel and rotating dial.. Sealed back plate. 72-585-155 Prop65 information pending -