Quick view Add to Cart Parts Catalog for Type A-2 Compass Amplifier, Single Channel Amplifier, and C-4A Gyrosyn Compass Amplifier Document Part Number: T.O. No. 5N2-2-2-4 Number of pages: 28Part Number: T.O. No. 5N2-2-2-4Revision Date: 20-Nov-1959Description: Sperry Gyroscope Company MSRP: Was: Now: $19.62