Rare AutoDaen Automatic Ellipse Compass A versatile automatic compass capable of precise measurements. Uses 2 AA batteries (Batteries not included) When the switch is turned on, it slides and makes one complete cycle. I don't have much knowledge about it, so other functions haven't been tested. I believe all the parts are present, please check the photos. The case has a tear. Thank you. Instant purchase available ⭕️ - Brand: AutoDaen - Type: Automatic Compass - Accessories: Case, Instruction Manual - Function: Versatile - Size: Large diameter circular compass - Color: Black, Transparent Thank you for viewing.