Measuring What Matters to Industry

At S-Line, we design, manufacture and trade test and measurement instruments built for professionals who demand accuracy. Our instruments are engineered to perform in the most demanding environments — whether on the factory floor, in the laboratory, or out in the field.

With decades of expertise behind every product, we combine cutting-edge technology with rigorous quality standards to deliver measurements you can trust. Explore our range and discover why engineers and technicians around the world rely on S-Line to get it right, every time.

500+

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IS/IEC

Certified

Pan India

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Built on Precision.
Trusted by Engineers.

We are an established Indian manufacturer of test and measuring instruments, supplying accurate, reliable, and cost-effective products to industrial plants, power utilities, panel builders, and OEMs across the country.

In-House Manufacturing

Every product that is manufactured and calibrated at our facility is under strict quality controls, ensuring consistent accuracy across every batch.

Custom Specifications

Non-standard ranges, custom scale printing, special enclosure types, and OEM labelling available on request.

Certified & Compliant

Products manufactured to IS and IEC standards with full calibration traceability. NABL-traceable calibration certificates available.

Analog Panel Meters

  • The moving iron panel meters, DE 48/72/96/144 housed in moulded polycarbonate cases are suitable for the measurement of AC currents for frequency range of 15...400Hz and voltages in the frequency range of 15...100Hz. Moving iron meters indicate rms-values practically independent of waveform even of high harmonics. Error of indication may occur for extreme waveforms (e.g. phase gating controls) & for frequencies above 100KHz. These meters offer several advantages in switchboards and Generating Set Panels. Number of meters can be mounted in a Panel cut out Mosaic mounting). For CT operated ammeters, dials can be fitted based on CT ratio. Glass and bezel can be easily replaced.

    • Scale interchangeability.

    • Near linear scale.

    • Glass filled polycarbonate housing.

    • Knife edge pointer.

    • Easily replace able glass and bezel.

Insulation Tester

  • ITI series is a low voltage insulation tester which is best suited for testing motors, transformers, generators, switch gears, cables, house hold appliances, on-site maintenance and service departments.

    • Rugged design to withstand industrial environment

    • Metal body with collapsible Steel handle

    • In-built hand-driven brushless AC generator and static rectifier to supply Stabilized DC voltage

    • Guard terminal to eliminate surface leakage current

    • Cross coil movement, sintered anti-friction bearings and delrin-moulded gears ensures trouble free operation

    • 66mm logarithmic scale confirms to IS 2992-1987

    • Optional : Voltage measurement up to 500VAC/DC

Clamp Meter

  • Agam ALCT 606 A is a high-accuracy high sensitivity leakage current clamp meter, specially designed for testing AC leakage current from 0.1mA to 600A. It has the latest CT technology and digital integration technology, with small-size, high precision, and perfect function.

    • Compact size leakage clamp meter  

    • Current measurement from 0.1mA to 600A 

    • Large jaw opening 

    • Data storage facility upto 99 records 

    • Complies with CE, CAT protection

    • Software facility for reports

AET 23 Smart Digital Earth Tester

  • The moving iron panel meters, DE 48/72/96/144 housed in moulded polycarbonate cases are suitable for the measurement of AC currents for frequency range of 15...400Hz and voltages in the frequency range of 15...100Hz. Moving iron meters indicate rms-values practically independent of waveform even of high harmonics. Error of indication may occur for extreme waveforms (e.g. phase gating controls) & for frequencies above 100KHz. These meters offer several advantages in switchboards and Generating Set Panels. Number of meters can be mounted in a Panel cut out Mosaic mounting). For CT operated ammeters, dials can be fitted based on CT ratio. Glass and bezel can be easily replaced.

    • Scale interchangeability.

    • Near linear scale.

    • Glass filled polycarbonate housing.

    • Knife edge pointer.

    • Easily replace able glass and bezel.

Polycarbonate Body Low-Voltage Multi Range Insulation Tester

  • ITMR series is a low voltage polycarbonate body multi-range portable Insulation Tester that offers the measurement of insulation in transformers, motors, generators, or domestic appliances.

    • Housed with robust Polycarbonate material case which offers high ruggedness to instrument

    • In-built hand-driven brushless AC generator and static rectifier to supply Stabilized DC voltage 

    • Guard terminal to eliminate surface leakage current 

    • Cross-coil movement, sintered anti-friction bearings, and Delrin-moulded gears ensure trouble-free operation

    • 66mm logarithmic scale confirms to IS 2992-1987   

    • World Class Aesthetics, for better user experience

AIT 501 Smart 5KV Digital Insulation Tester

  • The Agam AIT 501 is the 5KV Smart Digital Insulation resistance tester with diagnostic features like PI, DAR. Has selectable test voltages of 500V, 1000V, 2500V and 5000V & Insulation resistance measurement upto 1 TOhm. An compact tool for Insulation testing designed smartly.

    • Robust unit : Ideal for portable testing

    • Test voltages of 500V, 1000V, 2500V and 5000V & Insulation Resistance measurement upto1 TOhm : To cater wide applications

    • Automatic Polarisation Index (PI), Dielectric Absorption Ratio (DAR): For diagnostic testing of Insulation

    • DC/AC voltage measurements to 600V : To check live voltages if any present in DUT

    • Autoranging insulation resistance tester : No need to select range manually

    • Auto shut down when left idle & Optional Operation on Mains via adapter: Ensures Battery saving

    • Datalogging capabilities and USB interface : For maintaining records & data analysis

    • Comparator Function:Pass/fail (Go-No-Go) test for the insulation measurements

    • Wide LCD with backlit screen, Analog bar graph (30 segment): For Easy, Comfortable and Accurate viewing

Industries That Depend on Us

  • Switchgear & Panel Manufacturers

    Panel builders and switchgear OEMs rely on us as a dependable supply partner — consistent quality, on-time delivery, and competitive pricing for volume requirements.

  • Utilities & Grid Operators

    Power distribution companies, water utilities, and gas operators use our analog meters in substations, pumping stations, and field panels where digital interfaces are impractical.

  • Process & Plant Engineers

    Motor control centres, distribution boards, and control panels in manufacturing plants require reliable panel instrumentation. We supply plant engineers and panel shops directly.

Get in touch.

Have a question about our instruments, need technical support, or looking for a custom measurement solution? Our team of experts is here to help. Whether you're a first-time buyer or a long-standing partner, we're committed to giving you the answers and assistance you need — quickly and professionally.

Contact us at sales@sline.co.in.