Servo compass

Shaft encoder having tape punch and switch readout means...

Shipboard reference for an aircraft navigation system

Sighting devices

Sighting in apparatus for rifle mounted telescope gunsights

Signal for industrial surveys

Signal processing system of optical fiber gyro

Simplified calibration technique and auto ranging circuit...

Simplified readout optics for a ring laser apparatus

Single cue flight director indicator

Single ended tuning fork inertial sensor and method

Single pivot remote reading compass

Single stage demodulator with reference signal phase dither

Single-polarization, integrated optical components for...

Slightly magnetic compass

Slip interface for mounting gyro sensor coil

Slope meter

Slotted target alignment means for use with projected light...

Snap-in level vial cover

Snap-in vial retainers