Precision selected
Type :
belt  OR hood  OR kukl  OR bags  OR kazajk  OR animals  OR respirators  
AND
Eyepieces :
two circles  OR two triangles  OR panoramatic  OR one eyepieces  OR none  
AND
Valve chamber :
metal altogether  OR plastic altogether  OR divide  OR other  
AND
Fasten filter :
facefilter  OR screw  OR hose hardly  OR hardly  OR apparatus  OR speedcluth  OR other  
AND
Other characterisic :
halfmask  OR diagfram  OR hose  OR drinking  OR wiper  
AND
Period :
AND Country :
AND Producer :