Omni-Bearing Selector 336A-2 for Collins Radio VOR-102 Nav System DC-7 C-119 It is in exceptional condition

It is in exceptional condition given its age and appears to be new old stock

With a serial # AC42-670

and North American B-25 bombers of the US Army Air Force during WWII

See photos of instrument panels of B-25 and P-38 from the flight manuals of the versions which used this indicator

and another full rotation to 4000 RPM

Omni-Bearing Selector 336A-2 for Collins Radio VOR-102 Nav System DC-7 C-119 It is in exceptional conditionHere is an Omni Bearing Selector 336A 2 as used in the 1950's era Collins Radio Navigation System VOR 102. The selector enables selection of the desired track and provides to from information. The right hand knob selects the course, and the left hand switch reverses course 180 degrees. See photo of the instrument in the 1959 Collins Radio catalog page, and the front page of the Collins sales brochure. Measures 3. 25in diameter and ~6in deep. The VOR