AEROGRAPHER'S MATE 3 & 2 



EYEPIECE 



AZIMUTH CIRCLE 

 READ HERE 



ELECTRICAL 

 CONNECTION 



AZIMUTH TANGENT 



SCREW 4 

 MICROMETER DRUM 



BASE PLATE 

 MICROMETER 

 ADJUSTMENT 



CROSS HAIR LIGHT 



ELEVATION CIRCLE 

 READ HERE 



ELEVATION TANGENT 

 SCREW & 

 MICROMETER DRUM 



LEVELING SCREWS 



209.99 



Figure 9-1. — Shore-type theodolite (ML-474). 



RF (radiofrequency) signals which are modulated 

 at an audio rate controlled by the temperature, 

 pressure, and relative humidity of the atmosphere 

 through which the radiosonde passes. Radio- 

 sonde Receptor AN/SMQ-1( ) is designed for 

 shipboard use. However, with proper equipment 

 modifications, the AN/SMQ-1( ) may be used 

 as backup gear for the AN/TMQ-5( ) at shore 

 stations. 



This receptor is maintained under the Main- 

 tenance and Material Management System (3-M). 

 Information pertaining to the 3-M system may 

 be found in the Standard Navy Maintenance and 



Material Management System Manual, OPNAV 

 43P2, or the latest revision to the Military 

 Requirements for Petty Officer 3 & 2 rate 

 training manual. Detailed instructions on op- 

 erating principles and procedures may be found 

 in the Technical Manual for Radiosonde Re- 

 ceptor AN/SMQ-1A, NA 50-30SMQ1A-501. 



RADIOSONDE RECEIVER AN/SMQ-3. — This 

 receiver is similar in appearance and con- 

 trols and performs the same function as the 

 AN/SMQ-1( ). Detailed information on this re- 

 ceiver may be found in the Technical Manual 



158 



