Active Tools was established in 2002 to develop exceptional equipment for rowers. Currently we produce CoxOrb coxing amplifiers, performance monitors, rigging tools, rowing shoes and coaching tools.

All our products are developed and prototyped in house and this approach enables innovative designs to be produced very quickly. We then test the prototypes and first production samples extensively and gather input from Coaches, Rowers and Coxes so that the designs are as optimised as possible. For instance, our Rate Meters were the first to use accelerometers to eliminate the need for seat magnets and our CoxOrbs do much more than any other rowing amplifiers have ever been able to.

Our factory is based near Henley in England and we manufacture all our products in house. We supply direct in the UK and through agents in a number of countries. Where we don’t have agents we ship orders direct from the UK.

New products are always under development and we welcome comments on existing products and suggestions for new ones.

Nielsen-Kellerman is synonymous with rowing electronics.

From the invention of the NK CoxBox® Coxswain’s Amplifier and Rowing Performance Monitor over 40 years ago to the development of the EmPower Oarlock and real-time performance streaming with the NK Logbook app, NK has continuously developed, built and stood behind performance electronics and voice amplification products specifically for rowing and sculling.

These innovations, along with NK’s Blue Ocean Megaphone®, SpeedCoach® GPS Performance Monitor, StrokeCoach® Rate Meter, Interval Rate Watch and boat wiring and speakers, are relied upon by rowing athletes of all levels as well as coaches to develop insight, drive improvement and communicate clearly.

NK’s products all carry a full two-year warranty and carry a lifetime trade-in value towards the purchase of new products. The majority of NK’s products are designed and built entirely in the USA while sales, service and support is enhanced through our network of long-time partner resellers. NK is proud to be have expanded the technology boundaries of this beautiful, traditional sport and looks forward to many more decades of meeting the needs of athletes from novices to Olympians.

Nielsen Kellerman Australia Pty Ltd is the sole authorised Australian representative for Nielsen-Kellerman Company USA. We distribute electronic rowing sporting goods.

(serving just Australia)

PowerLine Rowing Instrumentation and Telemetry

The ultimate analysis tool for coaches and athletes

Rowing’s most affordable performance monitor – the Scullr GPS rowing computer – is designed specifically for schools and clubs.

It provides all the critical training data rowers expect with an intuitive interface and a host of class leading features.

Real-Time Force Curve Feedback System