| 摘要 |
<p>The instrument can find application in rescue and securityoperations for stereoobservation and photographing in differentscales and having minimum number of components. It consists of atwin-section photographic objective lens (3) and rear part ofwhich is built into the casing (1) of the photocamera, and itsfront part (4) being connected in parallel and in a mobile mannerto a sighting device (5). The connection between the two parts (2& 4) of the objective lens (3) is made by means of a dismantableconnection (6), and the casing (1) can occupy three stableoperating positions.</p> |
