The Rbl. Flak is used with heavy antiaircraft guns for indirect fire against ground targets and for reciprocal laying. A modified type is designed for use with the predictor.
When mounted in their respective sockets with the azimuth scales set to zero, the line of sight of the panoramic telescope on the predictor is 180° from that of the predictor telescope. The reason for the eyepiece of the gun sight being 90° from the axis of the gun is for convenience as the operator can stand at the right side of the gun and look into the sight at right angles to the axis of the gun. This sight is 9.3 inches in height.
German: p. 185 (August 1, 1945)
The Rundblickfernrohr 40 is believed to have been designed for use with the 
This panoramic telescope is used on all standard field equipment. It is a 4-power, fixed-focus type with a field of view of 10 degrees. The line of sight may be raised or lowered by rotation of the angle of site knob. The angle of site scale is graduated from 100 mils to 500 mils (300 mils in normal). The angle of site micrometer is graduated in mils from 0 to 100 mils. The azimuth scales on the vertical barrel of the telescope are graduated in 100-mil intervals; the upper scale, 0 to 64, is fixed in relation to the rotating head. The lower has two semi-circular scales numbered 0 to 32 and can be rotated independently of the rotating head. A knurled portion permits adjustment. The azimuth micrometer includes two scales graduated in mils from 0 to 100 mils. The outer scale can be rotated independently of the azimuth worm. Evidently the fixed azimuth scale and micrometer are used for initial laying of the piece and the second scale and micrometer are then zeroed and used to measure base deflection. A throw-out lever is provided for rapid setting in azimuth. A locking lever locks the azimuth micrometer in any setting. The reticle pattern is shown above.
The Panoramic Telescope Rbl. F. 16, which has been replaced by the Rbl. F. 32 and 36, is still used on the