7. Strangely Shaped Key: Locate the keyhole on the black box on the table. Insert and turn the key. A switch will appear on the display above. Flip the switch. The mechanism will activate showing a second display. Go back to the Strangely Shaped Key and turn the key counterclockwise (8 o’clock). A secret compartment will reveal behind the second display. Get the Key from compartment. Go back to the Strangely Shaped Key. Turn the key counterclockwise again (4 o’clock). Flip the switch that appears on top. Turn the key clockwise once (8 o’clock). Go back to the second display. Get the Metal Plate from compartment.
8. Brass Plate: Locate brass plate on the black box. Insert the key. The plate will part and reveal a square with a music note image on the center and three triangles. Tap on the square until the image become the image of a scroll. Go back to the Strangely Shaped Key, turn the key clockwise (4 o’clock), and go back to the brass plate. Tap on the square until the image become the image of a music note. Go back to the Strangely Shaped Key, flip the switch, turn the key counterclockwise (12 o’clock), and go back to the brass plate. Two buttons will appear at either side of the image. Press the buttons at the same time. A number lock and a panel of four prisms will appear.
9. Prisms: Prism can be rotated by press on the switches located at the end of each prism. Press the first one twice, second one once, and third one twice. Put on the eyepiece. Rotate your view. You will see a passcode: 573.