Specifications 
 Instrument Specifications: High 38.5cm arm length 30cm Trolley 42cm; image projection accuracy of ± 0.25-0.30mm; photographic plate 240 × 240mm tilt and rotation can be arbitrary; zoom lens is the lens to 0.5,1.0,1.5,2.0,2.5,3.0, 3.5,4.0,4.5 negative lens is 0.5,1.0,1.5,2.0,2.5; vision adjust brightness of optical glass with a dark 25%, 50%, 75% to adjust the light; operating voltage is 220 volts with a fluorescent light. 
 Application; 
 Aviation Photo plotter, also known as single-turn transfer plotting the projector is an easy and have some basis for the accuracy of aerial equipment. It can aerial photograph with image distortion correction for mapping transfer painted to go with the base map. Since the instrument can be directly plotted using aerial photos and has a certain scale professional production of maps, aerial survey and without additional other operating procedures (corrective and aerial film into a photo copy, etc.), so the mapping can greatly improve the speed and reduce costs , while maintaining a certain image quality, aerial photographs turn plotter can be widely used in small and medium scale topographic map revision and and various operations (such as soil surveys, regional geological survey, coal, mineral surveys, hydrogeological investigation, forestry, grassland surveys, College teaching medium and large) application to draw a variety of aerial photograph base map scale professional operation.