(formerly B700 & B900)

The B-ONE variometer

The B700/B900 are now redesignated B – ONE.

The main features of the new instruments are:
– Unique lift trend displays and warnings, both audio and visual
– expanded scale in low range (+/- 2 knots or +/- 1 M/s)
– compressed in high range (+14 knots or +7M/s maximum indication),
catering for all lift strengths without switching,
– better sensitivity (pointer movement per lift unit) in mid range than
typical mechanical vario or LCD vario
– expanded audio sensitivity in low climb range
– digital display never obscured by pointer while climbing
– high contrast, high resolution stepper motor driven white pointer against
black background – LCD pointers cannot compare!
– bright, clear colour LED indicators
– innovative and informative audio
– Running average (AVERAGER) and total climb, average(INTEGRATOR)
– 57mm only, easily field changeable for knots or metric calibration.
– clear labelling of switch functions
–  B – ONE has standard low cost emergency power pack
– Repeater includes controls
– Robust mechanical and electronic design
– glass front, not plastic
– field proven hardware and software
– proven field reliability– builds on many years of  B300/B400/B500/B600/B700/B800/B900 production and over 44 years of
pressure transducer variometer production
– thousands of variometers in use worldwide
– same company, same owners
– designed and manufactured by a former championship soaring team
and software developers with soaring experience.

See manual here:

http://www.borgeltinstruments.com/wp-content/uploads/2025/04/B-ONE-manual.pdf