Dual Brothers
Dual Brothers
Your trusted independent sourcing partner for high-accuracy metrology instruments. We procure genuine equipment from top OEMs and deliver to your doorstep with lifetime technical support across 160+ countries.
Who We Are
Dual Brothers is a trusted global metrology and calibration sourcing partner based in Chennai, India. Our expert engineering and procurement team delivers genuine, high-accuracy calibration instruments manufactured to ISO/IEC 17025 accredited metrology standards worldwide. From technical specification evaluation and consolidated multi-brand procurement to export clearance, door-to-door logistics, and lifetime technical support, we ensure seamless supply across 160+ countries worldwide with standard delivery in 2 to 4 weeks.
Why Partner With Us
Every instrument is supplied with authentic calibration documentation traceable to BIPM, NIST, and National Standards — compliant with FDA, NABL, UKAS, DAkkS, and ILAC MRA agreements.
Learn About Traceability Chain →Reliable worldwide air shipping delivered to your doorstep via DHL Express / FedEx Priority with 100% transit cargo insurance and prompt customs documentation.
Our expert technical team evaluates your exact requirements and delivers authentic, factory-tested instruments with comprehensive ISO/IEC 17025 calibration documentation.
Direct engineering assistance, re-calibration guidance, and immediate customer response throughout the entire lifecycle of your instruments.
Dual Brothers is your established, independent global sourcing partner and international procurement exporter for ISO/IEC 17025 accredited calibration instruments. Operating from Chennai, India, we serve as a dedicated metrology procurement ally for calibration laboratories, pharmaceutical cleanrooms, aerospace, energy, and heavy processing plants across 160+ countries worldwide. Rather than restricting clients to single-factory limitations, our metrology engineers independently evaluate your specific accuracy and tolerance needs, source authentic equipment directly from certified top OEMs, and perform thorough pre-dispatch calibration audits.
Every procured instrument is delivered with authentic multi-point calibration certificates with verified measurement uncertainty traceable to BIPM, NIST, and National Metrology Institutes under the ILAC / APAC MRA framework — fully compliant with FDA, NABL, UKAS, and DAkkS regulatory standards. Sourcing through Dual Brothers delivers clear commercial advantages: transparent multi-brand procurement pricing in both USD ($) and INR (₹), flexible commercial terms (CIF - DDU Terms & EXW - From India), guaranteed transit cargo insurance via DHL Express / FedEx Priority, 4-hour proforma responses, and lifetime technical support.
Independent engineering assessment matching your exact tolerance and budget. We source authentic instruments directly from certified top OEMs — eliminating single-brand bias.
Every unit is supplied with verified calibration certificates with stated expanded uncertainty (k=2) traceable to BIPM, NIST & NPL under ILAC / APAC MRA agreements.
Global shipping under CIF - DDU Terms or EXW - From India. Priority door-to-door express delivery via DHL Express & FedEx Priority with 100% transit cargo insurance.
Complete official commercial proforma invoices including HS classification codes (9031.80 / 9025.19), freight dimensions, zero-rated export handling, and lifetime technical support.
What We Offer
ISO/IEC 17025 accredited calibration, multi-brand procurement, and global supply for mission-critical industrial applications.
High-precision calibration for RTD sensors, thermocouples, dry blocks, liquid baths, and pyrometers spanning -100°C to 1500°C. Full traceable documentation provided.
Pneumatic & hydraulic pressure calibrators, digital gauge testing, and master indicators from vacuum -0.9 bar up to 1000 bar.
Consolidate your multi-brand metrology procurement under a single contract. Door-to-door logistics, unified documentation, and tariff optimization.
Global Reach
From Chennai, India — precision calibration instruments delivered door-to-door with full certification.
DB Hygron Series
5°C to 60°C • 3% to 95% RH • ±0.05°C / ±0.2% RH Stability • 0.01 Res • 7" True Colour Touchscreen
DB Therion Series
-100°C to 1500°C • ±0.03°C Stability • ±0.05°C Radial Uniformity • EURAMET cg-13 Metrology Grade
DB Pyrovia Series
0°C to 1500°C • ±0.03°C Stability • 0.01°C Res • Body, Surface & High-Temp Industrial Modes
DB Thermobath Series
-80°C to 250°C • ±0.03°C Stability • ±0.15°C Uniformity • 4.3" True Colour TFT Touchscreen
DB Barion Series
Vacuum -0.9 bar to 1000 bar • ±0.05% FS Accuracy • 6-Digit Res • Air, Oil & Water Media
DB Thermet Series
Temperature • Humidity • Air Velocity • Dew Point • Multi-Parameter Portable Indicators
DB Rotron Series
6,000 to 240,000 RPM • 0.001 RPM resolution • Contact & Non-Contact • Ultra-stable motor • Stable within 5 seconds • 4.3" TFT
DB Metron Series
-200°C to 660°C • Standard 6 mm OD • High accuracy & stability • Fast response • ISO quality control • Custom dimensions available
Complete DB Series Range
Beyond our featured products, Dual Brothers manufactures a comprehensive range of precision measurement & control instruments. Enquire for pricing, specifications, and export availability.
Digital: 10 ms to 9999.99999 s • Mechanical: 1 s to 9999.99999 s • 10 μs resolution • Calibrates up to 5 stopwatches simultaneously
-100°C to 120°C • ±0.03°C stability • ±0.02°C radial uniformity • 0.01°C resolution • 4.3" TFT • Metrology-level
500°C to 1500°C • ±0.2°C stability • Silicon carbide element • Interchangeable multi-hole thermowells • ISO 17025 accredited
-15°C to 500°C • ±0.03°C stability • 3.5 kg lightweight • Rugged for on-site use • 2.8" TFT touchscreen • Quick heating/cooling
100°C to 1500°C • Standard 6 mm OD • High accuracy & stability • Long life • Wide temperature range • Custom dimensions on request
-50°C to 2200°C • 1.8 mm measuring spot • 1 ms exposure time • 14 mm sensing head • Up to 125°C ambient without cooling
0 to 1000 bar • ±0.05% FS accuracy • Oil & water media • 6-digit resolution • PC interface with semi-auto calibration software
-40°C to 85°C • 0 to 100% RH • ±0.2°C / ±0.8% RH accuracy • 0.01 resolution • Data logger • USB Type-C • Anti-slip rugged build
Dew point: -60°C to +60°C • RH: 0 to 100% • Temp: -40°C to 70°C • ±2°C dew point accuracy • Li-ion battery • USB Type-C
-40°C to 100°C • 0 to 100% RS • 0 to 1 aw • ±0.2°C / ±0.36°F accuracy • 0.01°C resolution • Data logger • USB Type-C
0 to 20 m/s • 0.001 m/s resolution • ±5% FS accuracy • -10°C to 60°C • 0 to 100% RH • Data logger • USB Type-C
8 / 16 / 32 channels • 100 ms sampling • 20,000 readings/channel • USB / PC / Printer output • 3.5" or 8" touchscreen • Live trend graph
Fuzzy Logic PID • DIN-rail • RS-485 Modbus RTU • SCADA/HMI/PLC integration • Detachable display • 0.00001 resolution
10 to 9,999 RPM/RPS/RPH • RTD, 8 TC types, mA, mV • Dual control outputs • 8 PID/ON-OFF combos • RS-485 Modbus RTU
2" / 4" / 8" display • Humidity, Temp, Pressure • Universal inputs (RTD, TC, mA, V, mV) • Retransmission output optional
2" / 4" / 8" display • Up to 999999 counts • 9999 sec/min/hr timer • 0.01 resolution • RS-485 Modbus • Rotating display
2" / 4" / 8" display • TC, RTD, mV, mA inputs • -199999 to 199999 range • 0.0001 resolution • RS-485 Modbus master/slave
0 to 60°C (opt. -40 to 125°C) • 0 to 100% RH • 0 to 2000 mbar pressure • ±0.3°C / ±1.5% RH accuracy • Barometric & differential
-2 to 16 pH • ±1999 ORP • Isolated 4 to 20 mA • 2 relay outputs • Auto 2-point buffer calibration • LED display
1 to 20 ppm to 200 ppt TDS • 1 μS to 200 mS conductivity • 1 to 200 ppt salinity • Auto/manual temp compensation • LED display
pH • ORP • TDS • Conductivity • Temp • Easy 2-point calibration • >1012 Ω impedance • 90-270 V AC/DC universal supply
Conductivity 1 nS to 10 S • pH -2 to 16 • ORP • TDS • Salinity • Resistivity • 0.001 pH resolution • TFT touchscreen
0 to 2000 ppm/μS • 0 to 200 ppt/mS • 0 to 150°C • Cell constants 0.01 / 0.1 / 1 • Standard 5 m cable • Multiple fittings
pH 0 to 14 • ±1999 ORP • 0 to 150°C • BNC attachment • Standard 5 m cable • Multiple fitting options • Easy installation
Industries
From offshore oil rigs to pharmaceutical cleanrooms — our ISO/IEC 17025 instruments meet the most demanding metrology requirements in the world.
Our Mission
What Clients Say
“Excellent DB Therion dry block calibrator — arrived in Dubai perfectly packaged with full ISO/IEC 17025 certificate. Rapid communication and seamless customs clearance via DHL.”
“Fast 4-hour response to our RFQ. Complete ISO 17025 calibration documentation provided upfront, and the DB Barion hydraulic calibrator easily met our FDA audit standards.”
“Custom RTD probes fabricated exactly to our wafer fab specifications — Inconel sheath, Class 1/10 DIN purity, and 4-wire PT100. Dispatched within 10 days. Outstanding metrology supplier.”
“Our commercial calibration laboratory relies on the DB Thermobath and DB Rotron calibrator. Outstanding stability, traceable standards, and responsive factory engineering support.”
“Saved over 45% on our commercial calibration lab upgrade compared to European OEM pricing, without compromising a fraction of metrological accuracy. The DB Pyrovia blackbody and Therion dry block calibrators have operated non-stop for 18 months with zero drift. Authentic ISO 17025 certificates and unbeatable factory-direct value.”
“100% trustworthy manufacturer. Lowest direct-export pricing we found worldwide for high-precision temperature and pressure calibrators. Delivery to Sydney was completed in just 8 days with DHL express tracking, airtight flight cases, and full traceable calibration test reports. Five stars for unmatched product build quality and responsive customer care.”
Reach Out
Connect with Dual Brothers engineering experts for instrument pricing, international shipping details, or technical datasheets.
⚡ Typically responded to within 4 business hours (IST, Mon•Sat 9am•6pm)
Real-time export milestones, instrument validations, and technical dispatches across our 160+ destination network.
Successfully packed and dispatched three units of DB Therion precision dry block calibrators (-35°C to 650°C) with ISO/IEC 17025 traceable calibration certificates to our enterprise industrial client in Dubai, UAE via DHL Express.
Completed precision fabrication of bespoke 4-wire Inconel 600 sheathed RTD PT100 sensors for pharmaceutical autoclave sterilization validation, calibrated at fixed points per ITS-90 guidelines.
Dual Brothers metrology solutions are now supplied across 160+ countries worldwide with dedicated commercial terms (CIF - DDU Terms & EXW - From India) and expedited customs documentation for GCC, North America, and Europe.
Got Questions?
Everything you need to know about buying calibration instruments from Dual Brothers.
Dual Brothers exports a full range of precision calibration instruments including dry well calibrators, liquid bath calibrators, infrared (blackbody) calibrators, precision humidity chambers, pressure calibrators (up to 700 bar), multifunctional process calibrators, rotational speed (RPM) tachometer calibrators, and custom RTD PT100 temperature probes. All instruments are supplied with ISO/IEC 17025 traceable calibration certificates.
Yes — Dual Brothers exports calibration instruments worldwide from Chennai, India. We regularly ship to the UAE, USA, UK, Saudi Arabia, Singapore, Germany, Australia, Malaysia, Qatar, South Africa, Bahrain, Oman, Kuwait, Canada, and 80+ other countries. All shipments are professionally packed and accompanied by full calibration certificates and export documentation.
Our Compact Dry Well Calibrators achieve an accuracy of ±0.2°C with a radial uniformity of ±0.05°C. Temperature range is 33°C to 500°C with a heating rate of approximately 30°C/min. Insert depth is 150mm, making them ideal for calibrating RTD sensors and thermocouples in the field or on the factory floor.
Yes. All Dual Brothers instruments are supplied with calibration certificates traceable to ISO/IEC 17025 accredited references. This ensures your quality management system (QMS) and regulatory requirements (FDA, NABL, UKAS, DAkkS, etc.) are fully met. We can provide documentation in the format required by your auditors.
Getting a quote is easy — just choose any of these three methods: (1) Fill the inquiry form on this page, (2) Email sales@dualbrothers.net, or (3) WhatsApp us at +91 91593 39343. We typically respond within 4 business hours (IST, Mon•Sat).
Our RTD PT100 and PT1000 temperature probes cover -200°C to +850°C. Available in Class 1 (A) and 1/10 DIN accuracy grades. Wiring options: 2-wire, 3-wire, and 4-wire. Sheath materials: SS316L and Inconel 600. Custom lengths, process connections, and connector types are available on request.
Yes, Dual Brothers specialises in custom industrial temperature probe fabrication. We design bespoke RTD assemblies, thermowell assemblies, and precision signal conditioning units to your exact specifications — including custom lengths, sheaths, connectors, and transmitter integration. Contact us with your drawings or requirements for a custom quote.
Standard delivery timeline is 2 to 4 weeks from order confirmation, depending on product type and destination customs clearance. Express door-to-door courier dispatch is also available upon request.
Dual Brothers supplies calibration instruments to a broad range of industries worldwide including oil & gas, petrochemical, pharmaceuticals, food & beverage, power generation, aerospace, semiconductor, automotive, water treatment, HV°C, and government metrology labs. Our instruments comply with international quality standards required by these sectors.
For bulk, institutional, or government tender orders, email sales@dualbrothers.net with your requirements, quantities, and delivery schedule. WhatsApp is also available at +91 91593 39343. We offer volume pricing, consolidated shipment options, and flexible payment terms for large orders.
