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Introducing the RADIANT Altimeter + VSI Combo, a must-have for any aviation enthusiast or professional pilot. With a bright and clear display, the instrument is available as either 2 1/4" or 3 1/8 panel cutouts.
 
IN STOCK AT AIRCRAFT SPRUCE

Altimeter + VSI Combo

$119.95Price

  • This new Digital Altimeter has improvements in both value and price. It clearly displays altitude and vertical speed in both digital and replica analog format. We have also improved the internal numerical font representation, resulting in clear and visible digital numbers. Also improved is the size of the units, with availability for the larger 3 1/8 inch panel cutout. The overall thickness of the unit is also reduced to less than ½” (not including electrical connectors or bezel).

     

    In a nutshell, this new product is similar to, yet distinct from, our older GEN-2 Digital Altimeter.It has an improved screen representation but does not include a barb adapter or an external temperature probe.

     

    This chart compares the older GEN-2 Digital Altimeter with this new, value-driven instrument. 

     

    Feature GEN2 Digital Altimeter + VSI NEW Altimeter + VSI COMBO
    Part # RDAL-22-GEN2 RI-2024-1&2
    Price $299.95 $119.95
    Analog Dial Atlimeter? YES YES
    Digital Altimeter? YES YES
    Settable Kollsman Window? YES YES
    VSI Analog? NO YES (small dial)
    VSI Digital? YES YES 
    Altimeter Calibration? YES YES
    Density Altitude? YES NO
    Barb Adapter? YES NO (uses cabin pressure)
    Outside Air Temp (and Probe)? YES NO
    2 1/4" panel cutout? YES (enlarged cutout YES (enlarged cutout)
    3 18"   panel cutout? Adapter ring available,  not included YES (adapter ring is included)
    Range 0-20,000 ft/+/-2000 FPS SAME/SAME
    Dimable Optional potentiometer SAME/SAME

     

    In addition, RADIANT is increasing its warranty period to three years for this new instrument, allowing more time for experimental builders to design their instrument panels with factory warranty support.

     

    With clear and easy-to-read displays, this Altimeter + VSI Combo is designed to enhance cockpit visibility and improve situational awareness. Whether you're soaring through the skies for pleasure or conducting professional flights, this device is an essential tool for safer and more efficient aviation. 

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To Our Customers

We are in the business of offering innovative aircraft instruments for experimental aircraft flying, and backup / CO instruments for general aviation (non-TSO/non-PMA). The instruments from Radiant Technology are not designed to be used in applications where their failure would endanger safe flight or human life in any way. They are intended solely for use in VFR conditions. They are not certified to meet any Technical Standard Order, and are not produced under a Parts Manufacturing Authority (TSO / PMA). As a result, they are suitable only for use in experimental and ultralight aircraft, and in Light Sport Aircraft, if meeting the requirements of the respective manufacturer.

Support

If you need support for your Radiant instrument purchase, please contact us by email at support@radiantinstruments.com. Because of our small staff, we do not have a direct phone number.  We do our best to respond to emails as soon as possible. If you do not hear from us within 48 hours, please try again. You may also try kathy@radiantinstruments.com. Please check our our Warranty Information here.

Shipping Information

Since we offer innovative aircraft instruments, we often introduce new products for sale that are in the final engineering phase. Sometimes an engineering problem emerges in the final phase that delays our production runs. This means that if you are ordering a new product, we could be several weeks out from shipping. We try to keep our product pages up to date with shipping information.

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As of 2025, there are only two of us working Radiant instruments. We manufacture products in batches, and cycles take about a month. It is always best to order now and get on the list. We do charge your card at the time your order is placed.

 

We are ship by USPS Ground Advantage. We do not ship internationally, but our distributor, Aircraft Spruce does. Please order at https://www.aircraftspruce.com/. Search "RADIANT" and most of our products should pop up.

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