Tag Archives | Wndsn XPD

Maybe you’ve read about Wndsn XPD’s telemeters on these pages and thought they looked cool but wondered if you would ever be able to to figure out how to use one. I suspect that is a pretty common sentiment because Wndsn just released a new manual called Wndsn Telemeters: Official Manual.

The manual includes basic instruction on using a telemeter which is actually relatively simple. It also includes instruction for a number of more advanced uses of their telemeters.

• Extending the Scales
• Measuring Latitude for Celestial Navigation
• Powers of 10 and Scale Jumps
• Measuring Angular Size
• Measuring Size Instead of Distance
• Resection: Triangulation, Trilateration, Triangulateration
• Resection Error Margins
• Small-Angle Calculations
• Accuracy Estimations
• Calibrating Device Resolution

Even if you don’t have a telemeter, you may want to consider a book like this. You can even use the back cover as a telemeter!

Wndsn Telemeters: Official Manual

You’ve seen Wndsn’s incredible low tech calculation tools on these pages before. They have created a variety of tools that calculate distance based on trigonometry, convert between MOA and MILs, and more… all without the need for moving parts or batteries.

Their newest tool, the Acrylic Telemeter Pendant is based on a Viking design. It allows the wearer to determine distance based on sighting objects of a known size while holding the pendant a specific distance from their eye.

This is one of Wndsn’s first acrylic tools and it has a unique feature that takes advantage of this optically clear material. There is a slot in the Telemeter Pendant that is sized to accept miniature glow sticks. The glow stick illuminates the markings on the Telemeter Pendant, allowing it to be used in low light.

Wndsn Acrylic Telemeter Pendant at Wndsn.com