Comparator Requirements for Use Required Badges Comparator This is a Deltronic DH 216 Optical Comparator. Watch Video Pass Quiz Badge applied after successful quiz Facilitator Checkout No Volunteers Currently Assigned Estimated Minutes for Checkout 5 Minutes Special Requirements Eye Protection Eye protection at or surpassing the ANSI Z87.1-2015 standard for specific tools, as well as at all times when in wood or machine shop. Secure Loose Items Including sleeves, headphones, hoodie strings, long hair. Closed-Toe Shoes Closed toed shoes are required.