Chapter 9 — SPECIALIZED METEOROLOGICAL EQUIPMENT AND THEIR USES 



COLOR FILTERS 



SHADE GLASS 



HORIZON LENS 



AZIMUTH 



ENGAGEMENT 



KNOB 



AZIMUTH TANGENT 

 SCREW A 



VERNIER DRUM 



GIMBAL 

 RING 



INDEX MIRROR 



ARTIFICIAL HORIZON 

 BUBBLE MOUNT 



BUBBLE ADJUSTMENT 

 KNOB 



FOCUS 



ELEVATION 

 ENGAGEMENT 

 KNOB 



ELEVATION TANGENT 



SCREW & 

 VERNIER DRUM 



ADJUSTABLE 

 COUNTER- 

 WEIGHT 



Figure 9-2. — Shipboard theodolite. 



209.100 



for Receiving Set, Radiosonde AN/SMQ-3, Instructions for their proper use may be found 

 NA50-30-SMQ-3-1. in the appropriate FMH or on the individual item 



itself. 

 CALCULATORS, COMPUTERS, 

 AND PLOTTING BOARDS 



COMPUTER EQUIPMENT 

 Various types of calculators, computers, and 

 plotting boards are utilized during the course Computer are daily playing a larger part 



of an upper air or winds aloft observation, in the field of communications. The speed with 



159 



