Inventors of the Brunton Axis Transit

science ​teaching and field tools designed by teachers

​​       ​       Real Science Innovations ​LLC

TruArc™ 10 Compass - $44.99

TruArc™ 7 Compass - $35.99

TruArc™ 15 Compass, cm - $53.99

Brunton TruArc™ 15


  • Fully-mirrored compass for sighting accuracy
  • Addition of round bubble level
  • Triple clinometer: gravity-driven needle within compass and dial on each end of hinge
  • Ever-North Magnet and magnified dial reader
  • 1 degree compass gradations
  • Weight: 3.2 oz.
  • Dimensions: 4” x 2.5” x 0.6”
  • More details

Instructor Kit of 24 TruArc™ 3  - $314.99

TruArc™ 20 Compass, inches - $62.99

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Brunton TruArc™ 10


  • Rugged and ergonomic, designed for adventure racing and use with GPS units 
  • Addition of multi-scale UTM map grids and GPS confidence/error circles
  • Introduces Ever-North Magnet, a rare earth needle less susceptible to interference and demagnetization
  • Magnified dial reader
  • 1 degree compass gradations
  • Weight: 1.7 oz.
  • Dimensions: 5.2” x 2.8” x 0.5”
  • More details
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TruArc™ 5 Compass - $26.99

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Brunton TruArc™ 3 - instructor kits


  • Options for 12 or 24 TruArc™ 3 compasses
  • Compasses come in custom foam-lined case
  • Great for teaching map and orienteering skills!
  • Includes teaching materials and student workbook (reproducible)​
  • More details
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TruArc™ 20 Compass, cm - $62.99

TruArc™ 15 Compass, inches - $53.99

Brunton TruArc™ 7


  • Addition of mirror for more accurate sighting 
  • Clinometer for simple angular measurements
  • 2-degree compass gradations
  • Inch and cm-scale side ruler
  • Weight: 2.2 oz.
  • Dimensions: 2.9” x 3.9” x 0.8”
  • More details
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Brunton TruArc™ Compasses

For Recreational to Professional Navigation


The Brunton TruArc™ series of compasses ranges from the basic baseplate compass to the precision mirrored compass-clinometer.  All are equipped with Brunton's Global Needle system that produces accurate bearing readings anywhere on Earth. All TruArc™ compasses also feature tool-free magnetic declination adjustment capabilities.  


The TruArc™ compasses are an essential component to any outdoor endeavor, from hiking to backpacking to orienteering races to professional guiding.  They are an excellent way to build map reading skills in your classes and an affordable way to take many field measurements.  


Just like Brunton's professional transits, the TruArc™ series is manufactured with pride in Riverton, WY. 

Contact Us:         Phone: 1 (970) 903-7684          Email: realscienceinnovations@gmail.com          843 South 4th St. Lander, Wyoming  82520

TruArc™ 3 Compass - $15.29

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Brunton TruArc™ 3


  • Classic baseplate compass
  • Perfect for student use
  • 2-degree compass gradations
  • Inch and cm-scale side rulers
  • Weight: 1.1 oz.
  • Dimensions: 2.5” x 3.5” x 0.5” 
  • More details

Brunton TruArc™ 5


  • Additional map grid lines and map magnifier
  • 2-degree compass gradations
  • Inch and cm-scale side ruler
  • Weight: 1.8 oz.
  • Dimensions: 2.9” x 4.2” x 0.6”
  • More details
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Brunton TruArc™ 20


  • Addition of protective cover and removable foot for added protection
  • Reference cards included in foot
  • Triple clinometer
  • Ever-North Magnet and magnified dial reader
  • 1 degree compass gradations
  • Weight: 3.6 oz.
  • Dimensions: 4.1” x 2.5” x 1” 
  • More details

Instructor Kit of 12 TruArc™ 3  - $224.99