Professional Quadrant Telemeter for Navigation, Surveying, and Astronomical Calculations
The Wndsn Quadrant Telemeter (alqTM) is a precision navigation instrument combining ancient astrolabe functions with modern tactical rangefinding capabilities. This multi-function telemeter serves professionals in emergency services, security, law enforcement, military operations, surveying, astronomy, and outdoor education.
Key Applications:
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Tactical Rangefinding: Measure distances to objects of known height using integrated telemetry scales
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Celestial Navigation: Determine position using sun and star observations with sine/cosine arcs
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Surveying & Mapping: Calculate angles, elevations, and distances for field surveying
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Astronomical Observations: Traditional astrolabe functions including shadow square calculations
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Emergency Navigation: Non-electronic backup navigation tool requiring no batteries or GPS signal
Technical Features:
- Precision-engraved scales
- Telemeter with 7.5 degree sighting scale, 7-unit input range, 500-unit output range
- 90-degree quadrant arc with 30-degree inclination scale
- Shadow square for solar altitude measurements
- Sine and cosine calculation arcs for trigonometric functions
- Durable 1 mm anodized black aluminum construction
- Made in Germany with laser-engraved graduations
Professional Use Cases:
- Military reconnaissance and tactical operations
- Search and rescue distance estimation
- Wilderness navigation and orienteering
- Astronomy and celestial observation
- Land surveying and topographic mapping
- Educational demonstrations of classical navigation techniques
This is the 2024 aluminum version (v. 24b) of our bestselling Quadrant Telemeter, offering enhanced durability for field use. The instrument requires no power source and functions in any environment, making it an essential tool for professionals who need reliable measurement capabilities independent of modern technology.
As seen on Soldier Systems Daily and on Spartanat.
The latest update to the standard qTM model (v. 24b). Anodized wallet-friendly thin aluminum. This batch of the Aluminum Telemeter has a golden/yellow hue in the scales. Consider this a special feature.
A multi tool for makeshift navigation, recon, and rangefinding, the double-sided Wndsn Pocket Quadrant Telemeter enables you to do more than merely guessing distances. Find an object of known size, or distance, or angle and measure with the appropriate scales and utilize the baked-in trigonometry to find the desired value by aligning the provided string across the various scales.
The backside features functions derived from ancient astrolabes; a degree and slope quadrant, a shadow square, as well as sine and cosine arcs and an inclinometer scale. By using our string as a plumb line, we offer three additional ways of sighting, plus we let you perform various trigonometric operations with the shadow square and sexagesimal scale, increasing the usefulness of the instrument with the list of applications topping 75 currently. The Quadrant Telemeter lets you measure angular size and compute distance, height or depth of object, altitude, or elevation, it allows computation of sine, cosine, and tangent for a given angle -- it can even be used as a star compass.
The best tool is the one you have with you, on you. Wndsn Telemeters are wallet-size distance and altitude nomographs developed in our applied science lab: Wndsn Telemeters combine a thousand years of civil engineering, surveying, navigation, and astronomy in one durable, low tech, high utility instrument that can be brought anywhere, is self-containing, and independent of external, modern technologies. Wndsn Telemeters are naked-eye tools that offer various means of measuring angular size, as well as graphical computers providing functions to process or convert the measured values. Their purpose is to help you navigate using known landmarks or astronomical features, to get a "second opinion" to cross-check values obtained with different means, or in emergency situations when other methods fail or are unavailable.
Made in Germany.
- Wndsn Pocket Quadrant Telemeter, double-sided
- Dyneema string, 0.27 mm turquoise and red, pre-configured in the required lengths (to string-it-yourself)
- Plumb line weight, stainless steel
- Custom-made carton sleeve
- Printed 32-page Telemeter pocketbook (in English and German)
- Digital 240-page full manual (in English, German on request)
See also: Quadrant Telemeter Tutorials
Specifications:
- 3.4" x 2.2" (85,6 x 53,98 mm)
- Silky black surfaces, bare metal scales
- ~3/64" (1 mm) anodized aluminum, laser engraved
Note: The anodized aluminum will scratch and patina during use. In addition, due to the manual production process, slight variations in finish can occur.
