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Japanese

Battery Commanders Telescopes

Model 93, 8 x 6° 15′ This telescope is so constructed that the tubes can be used only in the vertical position. Its primary use is believed to be for observation and correction of artillery fire. The eyepieces are of the multiple thread focusing type, and the diopter scale is graduated from +2 to -3. […]

Model 93, 8 x 6° 15′

Model 93 Battery Commanders Telescope
Model 93 Battery Commanders Telescope
This telescope is so constructed that the tubes can be used only in the vertical position. Its primary use is believed to be for observation and correction of artillery fire.

The eyepieces are of the multiple thread focusing type, and the diopter scale is graduated from +2 to -3. The reticle design consists of a vertical and horizontal mil scale graduated in increments of one mil from 0 to 30 on each side of 0. A light receptacle for artificial illumination of the reticle is provided.

The telescope is fitted with an angle of site mechanism. The hinge mechanism of the assembly consists of a simple hinge pin and a fitted yoke. The interpupillary mechanism is locked near the base and between the two tubes.

 
Telescope with Integral Tripod

Battery Commanders Telescope with Integral Tripod
Battery Commanders Telescope with Integral Tripod
The general purpose of this instrument is believed to be the observation and correction of fire, used with either machine guns or artillery. Unlike the instrument above, it employs a scissor movement and may, therefore, be used in either a vertical or horizontal position.

The reticle is the only angle measuring device provided. The limit for horizontal angles is 30 mils to the right and 10 mils to the left of zero. Vertical angles of plus and minus 20 mils can be measured. The 90° prisms are cemented. Minimum and maximum interpupillary distances are 60 mm and 70 mm.

The tripod is simply constructed, light in weight, and sturdy. It comprises an adapter or bracket for the telescope, a tripod head, and three tubular, fixed length legs with small metal shoes.

SPECIFICATIONS

        Model 93       Tel. with Int. Tripod
Power8 diameters8 diameters
Field of view6° 15′6°
Interobjective distance3 3/4 ins. 
Interpupillary setting58 to 70 mm54 to 70 mm
Deviation of light in vertical plane10 ins.9 ins.
Diameter of Exit Pupil.2 ins..15 ins.
Overall length12 3/4 ins.12 ins.
Overall width6 1/4 ins. 
Weight6 lbs., 5 ozs.2 lbs., 2 ozs.
Length of tripod 11 13/16 ins.
Weight of tripod 11 ozs.

*The interobjective distance with the tubes horizontal, and the interpupillary scale set at 64 mm is 21 ins.; with the tubes vertical, and the interpupillary scale set at 64 mm, the interobjective distance is 5 ins.

Japanese: p. 178 (March 1, 1945)