B737 Clock/Chronograph (mechanical)

Consisting on the following elements:

• 1 front frame made of 3 mm. thickness white acrylic
• 1 middle panel made of 2 mm. thickness transparent acrylic simulating glass
• 1 spacing panel made of 5 mm. thickness transparent acrylic
• 1 panel with engraved scale
• 1 needle

Components needed:

• 7 black buttons
• 2 3-mm amber leds
• 2 470 ohms resistors 

Recommended (see "accesories" section below):

• printed circuit board in order to easily connect components to SimIO control cards
• 2 groups of 6-displays sets (with connectors and printed circuit boards)

Assembly instructions here.

The mechanical version of the chrono needs a stepper motor controller.