REVIEW: Wndsn Pocket Quadrant Telemeter

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Some time ago we introduced you to the Mil/MOA Range Calculator from Wndsn. With this small analog calculation aid, you can quickly determine distances in combination with a riflescope. But Wndsn has an even more sophisticated tool for distance measurement that requires no additional aids: the Pocket Quadrant Telemeter. With it, you can directly calculate distances and much more. We will show it to you in detail.Here's the front view of the Mil/MOA Range Calculator (left) and the Quadrant Telemeter (right). They look very similar. The engraved nomograms function the same way, just hold the string to the input values on the left and right sides and you can read the distance. However, the Quadrant Telemeter does not have lines or MOA as a scale, but simply degrees.The back sides. The Pocket Quadrant Telemeter offers a variety of instruments related to angle measurement. In total, the Pocket Quadrant Telemeter offers over 75 different areas of application, with surely many more possibilities.But let's get back to the simplest of applications, calculating distances. For distance measurement, you only need the angle size in degrees and the size of the object in meters, or another unit of length, as input values, and the rest is done by the nomogram for you. But where do you get the angle size from?

About the Pocket Quadrant Telemeter itself. To be able to use it precisely, you need to tie a knot in the cord at 57.296 cm. That is the length of exactly 180/Pi. At this distance from the eye to the telemeter, one degree equals exactly one degree on the scale. Mathematics and trigonometry are really great. Note the posture of the instrument with the cord in the mouth as an application aid.

Now you can simply read the angular height of the object. In our case, the window is 2.7° high.

Of course, you can also take the width of an object, as long as you know how long it is.We know that the window in our case is two meters high. By placing the string on 2.7° on the left and two on the right, we get a distance of 40 meters. A really practical tool that we carry with us every day. And it must be said: practice makes perfect. The back offers you an angle and inclinometer. Simply place the string with the weight at the end through the notch.Approximately like this. Now you are ready to measure a variety of inclinations very accurately.Reading is simple. You can read the inclination in degrees or percent. In our case, we hold the Pocket Quadrant Telemeter at 29° or 55% relative to the horizontal, that is, the ground.At the bottom edge you will find a scale for an inclinometer from zero to thirty degrees. This gives you the inclination to the vertical. At Wndsn you will find a good explanation. For even more precise reading, you see a variety of lines. These correspond to scales for angular minutes.The scale closest to the edge is for 15 angular minutes, above that 30 and above again 45 angular minutes. The inclination shown in the image is therefore 26° and 45″.Also on the back is a shadow square, umbra recta and umbra versa, as well as a Sinus Cosinus converter. With the shadow square, you can calculate the height of a building or tower at a known distance, or vice versa, if you know the height. A very precise and illustrated instruction can be found HERE.

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