WebGL is not available in this browser, so the 3D model cannot be drawn. Try a current Chrome, Edge, Firefox or Safari.
Calibrate for true angular size
Measure the yellow bar below on the surface the trainee will actually look at (laptop panel, monitor, or the projection screen).
Enter the trainee’s eye-to-screen distance.
Distance presets:
Re-calibrate if you change browser zoom, move to another display, or change the projector throw. Trainees seated at different distances see different angular sizes — calibrate for the person you are teaching (or the middle of the room).