1. Allen Instruments & Supplies
1600 Callens Rd, Ventura, CA 93003
Coordinate: 34.25836,-119.24086
Phone: (805) 644-7405
2. Geonav Satellite Systems
5218 Dartmouth St, Ventura, CA 93003
Coordinate: 34.27327,-119.22483
Phone: (805) 650-6525
3. Geonav Satellite Systems
387 Maryville Ave, Ventura, CA 93003
Coordinate: 34.28209,-119.23576
Phone: (805) 650-6525