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 80+ 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 directly from leading ISO/IEC 17025 accredited OEMs 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 80+ 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 sources authentic, factory-tested instruments directly from leading global OEMs with full documentation.
Direct engineering assistance, re-calibration guidance, and immediate customer response throughout the entire lifecycle of your instruments.
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 — genuine OEM 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
Universal Inputs: RTD, TC (8 Types), mA, mV, V, Ω · 0.001°C RTD Res · Li-ion · USB Type-C
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 · 0–100% 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: 0–100% · Temp: -40°C to 70°C · ±2°C dew point accuracy · Li-ion battery · USB Type-C
-40°C to 100°C · 0–100% RS · 0–1 aw · ±0.2°C / ±0.36°F accuracy · 0.01°C resolution · Data logger · USB Type-C
0–20 m/s · 0.001 m/s resolution · ±5% FS accuracy · -10°C to 60°C · 0–100% 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
10–9999 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
0–60°C (opt. -40 to 125°C) · 0–100% RH · 0–2000 mbar pressure · ±0.3°C / ±1.5% RH accuracy · Barometric & differential
-2 to 16 pH · ±1999 ORP · Isolated 4–20 mA · 2 relay outputs · Auto 2-point buffer calibration · LED display
1–20 ppm to 200 ppt TDS · 1 μS to 200 mS conductivity · 1–200 ppt salinity · Auto/manual temp compensation · LED display
pH · ORP · TDS · Conductivity · Temp · Easy 2-point calibration · >10¹² ohm 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
0–2000 ppm/μS · 0–200 ppt/mS · 0–150°C · Cell constants 0.01 / 0.1 / 1 · Standard 5 m cable · Multiple fittings
pH 0–14 · ±1999 ORP · 0–150°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 dry well calibrator — arrived perfectly packaged with full calibration certificate. Communication was fast and professional. Will order again."
"Fast response to our RFQ, ISO documentation provided immediately, and the pressure calibrator met all our accuracy requirements. Great vendor from India."
"Custom RTD probe fabricated exactly to our specification — correct length, Inconel sheath, and 4-wire PT100. Shipped within 10 days. Highly recommended."
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)
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 OEM 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, HVAC, 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.