For collaborative and team-based markup solution, check out Bullclip, by Drawboard, at /bullclip. Drawboard PDF is an essential tool for Architecture, Engineering and Construction industries. (A free trial of Drawboard PDF PRO is available in-app, then as a subscription). Grid and Line Templates & Overlays: Select from a range of grids and line templates to enhance your note taking and sketching. Digital Protractor: Measure and rule ink at precise angles - compatible with Surface Dial.

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