The check pattern comprises a 'check rear pattern' and a 'check front pattern' which are mutually shifted in the direction of the vertical scanning.

Also provided are a method for using the test chart, and a chart board and a test device provided with the test chart.

The adhesive layer is maliable in an initial phase such that the relative position of the gun sight to the gun can be adjusted to operationally align the gun sight, and thereafter fixes the gun sight in that alignment.

The 'check rear pattern' is printed by a rear group of nozzles, and the 'check front pattern' is printed by a front group of nozzles.

A front light guide (342) transmits light from a light source to the front sight, and a pair of rear light guides (344) transmit light from the light source to the rear sight.

At least one embodiment of a method includes creating a test pattern for testing video functionality of the STT, sending the created test pattern to a digital encoder, and converting the test pattern to an analog signal.

The invention also relates to a level determining apparatus specifically adapted for the above rod, and to a method of using that rod.

The outer tube (2) is then moved with the levelling staff (3) along the inner tube (10) until the levelling staff (3) is at the right vertical position.

According to still another aspect of the invention, the sight takes a selected action if it detects the presence of a selected color within radiation originating externally of the sight.

A gray scale test pattern is also displayed on the electronic camera CRT screen (22) and the electronic camera test pattern is photographed using film (15).

A device has structure that can support the device on a weapon, and a range portion that specifies a range to a target.

The test image is Test pattern A from ISO/IEC standard 10561:1999.

A variable length, telescoping range pole includes a linear transducer for automatically measuring the overall length of the range pole and contributing that length information to the vector calculation.

The dot pattern comprises a set of a plurality of dots (33).

In the center of the board there are two smaller circles: the inner bull's eye and the outer bull's eye.