Section I. GENERAL
1-1. GENERAL. The RMHS Reference Gyro Set is a self-contained, portable system used as a calibration unit to
realign and adjust magnetic compasses on US Army Watercraft. Included in the manual are general description and
data; instructions for installation, operation, preventive and corrective maintenance, and technical principles of operation.
1-2. MAINTENANCE FORMS AND RECORDS. Department of the Army forms and procedures used for equipment
maintenance will be those prescribed by DA Pam 738-750.
1-3. DESTRUCTION OF ARMY MATERIAL TO PREVENT ENEMY USE. Procedures for the destruction of Army
material are contained in TM 750-244-2.
1-4. ADMINISTRATIVE STORAGE. Refer to TM 740-90-1 for procedures, forms and records, and inspections required
during administrative storage of this equipment.
1-5. REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATION (EIR). If your Reference Gyro Test Set
needs improvement, let us know. Send us an EIR. You, the user, are the only one who can tell us what you
don't like about your equipment. Let us know why you don't like the design or performance. Put it on an SF
368 (Quality Deficiency Report). Mail it to us at: Commander, U.S. Army Troop Support Command, ATTN:
AMSTR-QX, 4300 Goodfellow Blvd., St. Louis, MO 63120-1798. We'll send you a reply.
1-6. NOMENCLATURE CROSS-REFERENCE LIST
Directional Gyro CN-998B/ASN-43
Static Power Inverter PS-299-1
Angle Position Indicator Model 8300-02