Wndsn Quadrant Telemeter Tutorials

Making the most out of our graphical telemetry computers.

Like with many complex instruments, there are multiple ways to solve certain problems and to measure the required inputs. Combining the various functions leads to a multitude of advanced uses.

Extending the Scales

The Wndsn Quadrant Telemeter measures a maximum of 7° in angular size. What to do when the object is larger or closer than 7°? The answer is, knots. Prepare your string in a way that there are knots at 57.3/2 cm and 57.3/3 cm. Now, if you need to measure larger or closer objects, hold the instrument at the /2 knot and the engraved 7° becomes 14° (10 × 2); held at /3, the engraved 7° becomes 21° (7 × 3).

Extending the scales.

Extending the scales. The distance d is 57, 57/2, and 57/3 cm, respectively

Extending the scales.

Halving the distance d doubles the range of the α scale. Note that the scale divisions of 1/10° have to be read as 1/5° at half the distance; thus a higher degree range results in a lower resolution.

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