Nielsen-Kellerman
Nielsen-Kellerman is a US-based, founder-owned manufacturer of portable electronic measurement instruments across ten brands, including Kestrel weather and heat-stress meters, Kestrel Ballistics, NK Sports rowing performance systems, and the Ambient Weather network, serving athletes, shooters, military, fire, agriculture, and meteorology customers via D2C, dealers, and government channels.
- Company typePrivate
- Founded1978
- HeadquartersBoothby Pagnell, United Kingdom
- Headcount51–100
- GTM typeB2C
- OfferingHardware or Manufacturing
What Nielsen-Kellerman does
Nielsen-Kellerman Co. is a US-based, privately held manufacturer founded in 1978 and headquartered at 21 Creek Circle, Boothwyn, Pennsylvania, with over 150 employees and ten discrete consumer brands. The company designs and builds portable electronic measurement instruments — anchored by the Kestrel line of handheld weather and environmental meters (wind, temperature, humidity, pressure, altitude, WBGT heat stress), Kestrel Ballistics devices integrated with the Applied Ballistics library, NK Sports rowing performance technology (SpeedCoach GPS, StrokeCoach, CoxBox, Empower Oarlock), Blue Ocean megaphones, MagnetoSpeed chronographs, and RainWise, Ambient Weather, KestrelMet, and PVMet weather monitoring systems. Products connect via the proprietary Kestrel LiNK Bluetooth ecosystem to iOS, Android, Windows, and OSX applications and feed third-party software integrations and the Ambient Weather Network through a published Communications Protocol.
The business model is primarily hardware sales through a multi-brand direct-to-consumer e-commerce footprint (nkhome.com and brand-specific storefronts), a global authorized dealer network, and dedicated government/tax-exempt procurement enabled by ID.me verification. Recurring revenue is layered through a $75 factory tune-up and NIST-calibration service, replacement parts and accessories, and the AWN+ subscription for premium Ambient Weather Network features. Customer segments span athletes, competitive shooters, long-range hunters, firefighters, military and first responders, agricultural operators, meteorologists, and industrial safety managers.
Strategically, the company has compounded its original rowing franchise into a multi-vertical specialty instrument platform through organic brand launches and the January 2020 acquisition of Ambient Weather. Core competitive anchors include NIST-traceable calibration standards, US-based manufacturing, deep domain specialization in WBGT and ballistics, and a LiNK-driven integration ecosystem. Governance remains founder-controlled (Paul Nielsen and Richard Kellerman as co-founders), with no disclosed institutional investors, funding rounds, or parent entity.
Nielsen-Kellerman firmographics
Firmographics- Name
- Nielsen-Kellerman
- Legal name
- Nielsen-Kellerman Co.
- Website
- http://www.nkhome.com/
- Company type
- Private
- Founded year
- 1978
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Nielsen-Kellerman is a US-based, founder-owned manufacturer of portable electronic measurement instruments across ten brands, including Kestrel weather and heat-stress meters, Kestrel Ballistics, NK Sports rowing performance systems, and the Ambient Weather network, serving athletes, shooters, military, fire, agriculture, and meteorology customers via D2C, dealers, and government channels.
- Ownership category
- akta.pro rank
Nielsen-Kellerman industry classification
Industry- Product category
- Electronic Measurement Instruments
- NAICS
- Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451), Other Measuring and Controlling Device Manufacturing (334519)
- SIC
- Industrial Instruments For Measurement, Display, And Control (3823)
- akta.pro primary industry
- Navigation, Lighting & Outdoor Electronics Retail (CRAMAMAF)
- akta.pro secondary industry
- Outdoor Navigation, Safety & Survival Gear Retail (CRAMAAAE)
Keywords
Where Nielsen-Kellerman is headquartered
LocationHeadquarters
- HQ city
- Boothby Pagnell
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Nielsen-Kellerman business model
Business model- GTM type
- B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Hardware Product Sales: Sale of weather meters, ballistics devices, sports performance equipment, and environmental monitoring instruments through e-commerce and dealer channels. Products include Kestrel series meters, DROP dataloggers, NK Sports products, and accessory items.
- Calibration and Service: Factory calibration, NIST calibration, and tune-up services for Kestrel instruments. Tune-ups include replacement impeller, battery, functional checks, and cleaning at $75 flat rate.
- Software Subscriptions: AWN+ subscription for Ambient Weather Network premium features.
- Replacement Parts and Accessories: Sale of replacement batteries, battery doors, impellers, carrying cases, mounts, and other accessories for Kestrel products.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Pay-as-you-go | Kestrel Tune-Up Service |
Go-to-market motion3 records
Distribution channels5 records
Marketing channels7 records
Nielsen-Kellerman product offering
Product offeringCore offering
Nielsen-Kellerman designs, manufactures, and sells portable electronic measurement instruments under ten brands, including handheld Kestrel weather meters, Kestrel DROP environmental data loggers, KestrelMet weather stations, Kestrel Ballistics calculators, NK Sports rowing performance monitors, MagnetoSpeed chronographs, RainWise and Ambient Weather stations, Blue Ocean megaphones, and PVMet solar weather instruments. The company sells its own US-made products direct through brand-specific e-commerce storefronts and through an authorized dealer network, complemented by factory calibration services and the AWN+ subscription platform.
Product overview
Nielsen-Kellerman is a US-based manufacturer with ten discrete brands spanning weather monitoring, sports performance, and ballistics. The core product lines include Kestrel Instruments (handheld weather meters and data loggers across Basic 1000-3550 and Advanced 5000-7000 series), Kestrel Ballistics (ballistics calculators and rangefinders for shooting), and NK Sports (rowing performance technology including SpeedCoach GPS and StrokeCoach). Additional brands include Blue Ocean Megaphone (public address systems), RainWise and Ambient Weather (weather stations), MagnetoSpeed (muzzle velocity measurement), AWN (weather observation network), KestrelMet (weather station systems), PVMet (solar monitoring), and HeatStress.com (occupational safety). Products connect via Kestrel LiNK software for wireless data management. The portfolio serves athletes, firefighters, military, scientists, meteorologists, hunters, and industrial workers.
Differentiator
Problem solved
Functional benefit
Brands
- NK Sports: Performance monitoring solutions for rowing and sports
- Kestrel Instruments
- Kestrel Ballistics
- Blue Ocean
- RainWise
- Ambient Weather
- MagnetoSpeed
- AWN
- KestrelMet
- PVMet
- HeatStress.com
Products and services
- Kestrel Basic Weather Meters (1000-3550 series) Entry-level handheld Kestrel weather meters measuring wind speed, temperature, humidity, barometric pressure, and other environmental conditions for outdoor recreation, sports, and general environmental awareness use by individual consumers.
- Kestrel Advanced Weather Meters (5000-7000 series)
Companies that use Nielsen-Kellerman
Customer profileNamed customers5 records
Segments6 records
Ideal customer profiles5 records
Nielsen-Kellerman technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration3 records
Feature8 records
Nielsen-Kellerman partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core and minor.
- LiNK Third-Party Software PartnerscoreKestrel LiNK ecosystem includes integration with third-party software applications through the Kestrel Communications Protocol. Partners can integrate weather data from Kestrel devices via Technology Agreement. Includes ballistics data integration with Applied Ballistics bullet library.
- Applied BallisticscoreKestrel Ballistics products incorporate Applied Ballistics bullet library, providing comprehensive ballistics calculations for long-range shooting accuracy.
- ID.meminorIdentity verification service enabling government and group pricing discounts through the checkout process.
- Ambient Weather NetworkcoreCommunity weather monitoring network where Kestrel and weather station data can be shared. AWN+ subscription provides premium features.
- Training Partners (Accuracy 1st, Altus, Mile High, FTW Ranch)minorRecommended shooting training facilities for live Kestrel 5700 Elite meter training, including locations in Texas, Florida, Colorado, and internationally.
Scale indicators5 records
Recent moves6 records
Expansion highlights5 records
Nielsen-Kellerman competitors and assessment
Company assessmentBroad incumbents
- Vaisala: Vaisala is a global leader in industrial and professional weather, environmental, and industrial measurement instruments serving meteorology, aviation, defense, and life sciences; it competes with NK's higher-end KestrelMet and PVMet professional lines but operates at significantly larger scale across a much broader portfolio.
- Garmin: Garmin's fenix, Instinct, and outdoor wearables incorporate weather, barometric, GPS, and environmental sensors; while Garmin does not sell dedicated handheld weather meters, it overlaps with NK's outdoor athlete and weather-monitoring target customers with broader device ecosystems.
Direct peers
- Leupold & Stevens: Leupold manufactures riflescopes, rangefinders, and spotting scopes targeted at hunters and tactical shooters, competing with NK's Kestrel Ballistics line for the same precision-shooting and hunting customer base.
- La Crosse Technology: La Crosse Technology designs and sells consumer weather stations, atomic clocks, and environmental monitoring devices, overlapping directly with NK's Ambient Weather and KestrelMet product lines in both retail channels and online.
- Sig Sauer (Electro-Optics): Sig Sauer's KILO and BALLISTICS rangefinders and BDX ballistics ecosystem target the same long-range precision shooting and hunting applications as NK's Kestrel Ballistics and Applied Ballistics integration.
- Bushnell: Bushnell is a leading brand in shooting sports optics including rangefinders, binoculars, and sport optics, directly overlapping with NK's Kestrel Ballistics and rangefinding binocular products in the long-range shooting and hunting market.
- Davis Instruments: Davis Instruments manufactures Vantage Pro weather stations and a broad portfolio of portable weather and environmental measurement instruments, directly competing with Nielsen-Kellerman's Kestrel and Ambient Weather/RainWise lines across both consumer and professional segments.
- AcuRite (Chaney Instrument): AcuRite is a major US-based weather instrument and weather station brand competing directly with NK's Kestrel, Ambient Weather, and RainWise sub-brands in consumer and prosumer channels including big-box retail and e-commerce.
Others
- MagnetoSpeed (NK sub-brand): MagnetoSpeed is itself a Nielsen-Kellerman sub-brand offering barrel-mounted ballistic chronographs; it is included as a peer to acknowledge that NK already operates a direct muzzle-velocity measurement business alongside its Kestrel Ballistics weather-and-ballistics meters.
Emerging players
- WeatherFlow-Tempest: WeatherFlow (now Tempest) builds connected consumer and professional weather stations with a community data network, competing with NK's KestrelMet and Ambient Weather Network platform on networked weather monitoring and cloud-based analytics.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Nielsen-Kellerman social profiles
Digital presenceNielsen-Kellerman financial estimates
Financial estimateRevenue estimate
Valuation estimate
Nielsen-Kellerman leadership team
Management profileNumber of profiles
Profiles2 records
Nielsen-Kellerman funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Nielsen-Kellerman M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Nielsen-Kellerman
What does Nielsen-Kellerman do?
Nielsen-Kellerman designs, manufactures, and sells portable electronic measurement instruments under ten brands, including handheld Kestrel weather meters, Kestrel DROP environmental data loggers, KestrelMet weather stations, Kestrel Ballistics calculators, NK Sports rowing performance monitors, MagnetoSpeed chronographs, RainWise and Ambient Weather stations, Blue Ocean megaphones, and PVMet solar weather instruments. The company sells its own US-made products direct through brand-specific e-commerce storefronts and through an authorized dealer network, complemented by factory calibration services and the AWN+ subscription platform.
Is Nielsen-Kellerman a public or private company?
Nielsen-Kellerman is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Nielsen-Kellerman founded?
Nielsen-Kellerman was founded in 1978. It employs 51 to 100 people.
Where is Nielsen-Kellerman based?
Nielsen-Kellerman is headquartered in Boothby Pagnell, United Kingdom, in the Europe region.
How does Nielsen-Kellerman make money?
Four revenue lines are on record. Hardware Product Sales are the primary driver. The others are calibration and Service, software Subscriptions and replacement Parts and Accessories.
Who are Nielsen-Kellerman's main competitors?
Broad incumbents on record are Vaisala and Garmin. Direct peers are Leupold & Stevens, La Crosse Technology, Sig Sauer (Electro-Optics), Bushnell, Davis Instruments and AcuRite (Chaney Instrument). MagnetoSpeed (NK sub-brand) is listed as an others. WeatherFlow-Tempest is listed as an emerging player.
Does Nielsen-Kellerman have an API?
Yes. Kestrel offers a Technology Agreement for integrating weather data protocol. For ballistics and/or weather data integration, developers must email [email protected] with a project description. The Kestrel Communications Protocol enables third-party applications to connect to Kestrel devices and access weather measurements. LiNK applications provide connectivity for data logging, CSV export, firmware updates, and social media sharing across Windows, OSX, iOS, and Android platforms. Developer documentation is at kestrelinstruments.com/technology-agreement.
What industry is Nielsen-Kellerman in?
Nielsen-Kellerman's product category is Electronic Measurement Instruments. Its primary akta.pro industry code is CRAMAMAF, Navigation, Lighting & Outdoor Electronics Retail, with a secondary code of CRAMAAAE, Outdoor Navigation, Safety & Survival Gear Retail. Its NAICS code is 33451 and its SIC code is 3823.