What Cambridge Instruments & Engineering Co does

Cambridge Instruments & Engineering Co. is an Indian privately held manufacturer of electrical and electronic test and measuring instruments, founded in 1963 and headquartered in Kolkata, with manufacturing operations in Howrah, West Bengal. The company produces a comprehensive catalogue of analogue and microprocessor-based instruments including insulation testers (CIE/444, CIE/666, CIE/777, CIE-5000PI), digital and analogue earth resistance testers (DET-2000, DET-2, CIE/222M), True RMS AC/DC clamp meters (DCM 5410 TR, DCM 2350), clip-on power factor meters (CIE/111 series), digital multimeters (DM 235), electric motor checkers (CIE/1001), oil test sets (7000 series), micro ohm meters, phase sequence indicators, high voltage breakdown test sets, primary current injection kits, relay test sets, and transformer turn ratio meters. Products are designed to conform to Bureau of Indian Standards specifications (IS:2992-1987, IS:9223/1979, IS:10656-1983, IS:1248-1983, IS:6792:1992) and carry calibration traceability to national and international standards.

The company's revenue model is built on one-time hardware sales of self-manufactured instruments supplemented by dealership/distribution of complementary third-party test equipment (tachometers, oscilloscopes, calibrators, sound level meters, etc.) for engineering colleges, universities, and R&D departments. Go-to-market is sales-led and direct: the firm operates a B2B quote-based engagement model targeting Indian state electricity boards, public sector undertakings (BHEL, NTPC, TISCO, NALCO, DVC), Indian Railways, and heavy industrial enterprises, alongside an e-commerce storefront at cieinstruments.com/shop/ serving smaller and individual buyers. The firm is family-owned (contact persons Manoj Sharma and Rajesh Sharma are listed as principals), with no disclosed institutional investors, no funding rounds, no M&A activity, and no parent or subsidiary entities reported. Customer concentration is heavily skewed toward Indian government utilities and central PSUs, with named logos spanning state electricity distribution companies across multiple Indian states and major central public sector units.

Name

Cambridge Instruments & Engineering Co

Legal name

Cambridge Instruments & Engineering Co.

Website

http://www.cieinstruments.com

Company type

Private

Operating status

Operating

Short description

Cambridge Instruments & Engineering Co. is a privately held Indian manufacturer, founded in 1963, of electrical and electronic test and measuring instruments (insulation testers, earth testers, clamp meters, oil test sets), selling primarily to Indian state electricity boards, PSUs, railways, and industrial customers.

Ownership category

akta.pro rank

Product category

Electrical Test and Measurement Instruments

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches) (IMAGAFAC)

Keywords

• Electrical test instruments
• Insulation resistance testers
• Earth resistance testers
• Clamp meters multimeters
• Power factor meters

Headquarters

HQ city

Kolkata

HQ country

India

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Marketing or Sales

Revenue model

1. Electrical Test Instruments Sales: Revenue generated from manufacturing and selling electrical and electronic test and measuring instruments including insulation testers, earth testers, clamp meters, multimeters, power factor meters, and oil test sets. Products sold through direct sales, website shop, and likely through vendor/partner channels.
2. Dealership/Distribution of Testing Instruments: Company also deals in various electrical and electronic testing/measuring instruments from other manufacturers including tachometers, light meters, thermometers, power meters, oscilloscopes, calibrators, and scientific/laboratory instruments for engineering colleges, universities, and R&D departments.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels2 records

Core offering

Cambridge Instruments & Engineering Co. manufactures and sells electrical and electronic test and measuring instruments including insulation testers, earth resistance testers, AC/DC clamp meters, clip-on power factor meters, digital multimeters, electric motor checkers, oil test sets, micro-ohm meters, phase sequence indicators, high voltage breakdown test sets, primary current injection kits, relay test sets, and transformer turns ratio meters. The company also deals in third-party testing instruments such as tachometers, oscilloscopes, and laboratory instruments for engineering colleges and R&D departments. Products are sold directly to government electricity boards, PSUs, railways, and industrial enterprises, as well as through an e-commerce storefront.

Product overview

Cambridge Instruments & Engineering Co. is a manufacturer of electrical and electronic test and measuring instruments established in 1963. The company produces a comprehensive portfolio of analogue and digital testing instruments including hand-driven and motorised Insulation Testers (CIE/444, CIE/666, CIE/555, CIE/777), Digital Earth Resistance Testers (DET-2000, DET 2), AC/DC Clamp Meters (DCM 2250 TR, DCM 5410 TR), Clip-on Power Factor Meters (CIE/111 Series), Digital Multimeters (DM 235), Electric Motor Checkers (CIE/1001), Oil Test Sets (7000 Series), Micro Ohm Meters, Phase Sequence Indicators, High Voltage Breakdown Test Sets, Primary Current Injection Kits, Relay Test Sets, and Transformer Trans Ratio Meters. The product line spans from traditional analogue hand-cranked instruments to advanced microprocessor-based digital testers with features like Polarization Index and Dielectric Absorption Ratio measurement.

Differentiator

Problem solved

Functional benefit

Products and services

• Insulation Testers (CIE/444, CIE/666, CIE/555, CIE/777, CIE-5000PI, DIT/5005) Portable and benchtop insulation testers for measuring electrical insulation resistance in machines, transformers, cables, and industrial installations. Includes hand-driven generator type (CIE/444, CIE/666, CIE/555), motorised (CIE/777), and microprocessor-based digital models (CIE-5000PI with P.I. and DAR, DIT/5005). Voltage ranges from 100V to 10,000V with resistance ranges up to 100,000 megohms. Conforms to IS: 2992-1987 and IS: 10656-1983.
• Earth Resistance Testers (DET-2000, DET 2, CIE/222M) Digital and analogue earth resistance testers for measuring resistance of earth in power circuits, telecommunications, and railway electrification. Models include DET-2000 (digital with Ni-Cd rechargeable cells), DET 2 (microprocessor-based with autoranging, last 10 memory, four-terminal measurement, ±1% accuracy), and CIE/222M (hand-driven generator analogue type). Conforms to IS: 9223/1979.
• AC/DC Clamp Meters (DCM 5410 TR, DCM 2250 TR) Digital AC/DC clamp meters with True RMS, auto ranging, 6000 counts, V.F.C. with low pass filtering, in-rush current measurement, and 40mm jaw opening. Features NCV, live wire test, flash light, low impedance ACV measurement, and temperature, frequency, DC cycle, and capacitance testing capabilities. Measures voltage up to 1000V and current up to 1000A AC/DC.
• Clip-on Power Factor Meter (CIE/111 Series) Clip-on power factor meter for measuring power factor in AC systems on L.T. circuits without interrupting the circuit. Measures from 0.5 lag to unity to 0.5 lead across current ranges 10A to 1000A for single and three-phase circuits. Conforms to IS: 1248-1983.
• Digital Multimeter (DM 235) Digital multimeter with 3.5 digit LCD display for measuring voltage, current, resistance, and other electrical parameters in field and laboratory use.
• Electric Motor Checker (CIE/1001) Comprehensive motor testing instrument for checking rotor and stator inductance, resistance, and insulation resistance without dismantling. Tests three-phase squirrel-cage motors, slip ring motors, variable speed motors, power tools, and submersible pumps.
• Oil Test Set (7000 Series) Breakdown/withstand test set for transformer and circuit breaker oil testing. Features autotransformer for smooth voltage variation, zero start interlocking, HT chamber door interlocking, and memory device for breakdown voltage display. Conforms to IS: 6792:1992.
• Micro Ohm Meter Precision instrument for measuring very low resistances in electrical components and circuits, used in testing contact resistance of breakers, busbars, and connections.
• Phase Sequence Indicator Instrument for determining the phase sequence of three-phase electrical systems to ensure correct phase connections in installations and motors.
• A.C. High Voltage Breakdown Test Set High voltage test equipment for testing insulation breakdown strength of electrical equipment under AC high voltage conditions.
• AC/DC Combined High Voltage Test Set Combined AC/DC high voltage test set for comprehensive insulation testing of electrical equipment under both AC and DC high voltage conditions.
• Primary Current Injection Kit Equipment for injecting primary current for testing protective relays and circuit breakers in power system protection applications.
• Relay Test Set Testing instrument for protective relay calibration and verification across power system protection applications.
• Transformer Trans Ratio Meter Instrument for measuring transformer turn ratio and verifying transformer connections in power and distribution transformers.

Quantifiable outcome

• Products tested by qualified quality assurance personnel before dispatch
• +1 more outcomes

Named customers13 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Scale indicators4 records

Recent moves3 records

Expansion highlights3 records

Direct peers

• Motwane Manufacturing Company: Indian manufacturer of electrical test and measuring instruments including insulation testers, earth testers, and clamp meters with a similar B2B customer base of utilities and industrial buyers; directly competes with Cambridge in India.
• Aplab Limited: Indian manufacturer of test and measuring instruments, power supplies, and electronic instruments serving industrial, telecom, and laboratory customers; comparable product breadth and Indian-domestic positioning.
• Meco Instruments: Indian manufacturer of analog and digital panel meters, clamp meters, multimeters, and insulation testers; directly comparable in product family and Indian B2B customer base.

Broad incumbents

• Fluke Corporation: Global leader in handheld electrical test and measurement instruments including insulation testers, multimeters, and clamp meters; competes with Cambridge globally and in Indian industrial accounts.
• Megger Group: Specialist in electrical test equipment for power utilities including insulation, earth, and transformer testing; directly comparable product portfolio with stronger international presence.
• Hioki E.E. Corporation: Japanese manufacturer of electrical measuring instruments including insulation testers, clamp meters, and power quality analyzers; competes in similar application categories globally.
• Kyoritsu Electrical Instruments Works: Japanese maker of digital multimeters, clamp meters, insulation testers, and earth testers; comparable product categories targeting similar electrical maintenance and utility customers.
• Chauvin Arnoux: French manufacturer of measurement instruments for electrical and energy applications including insulation testers, clamp meters, and power quality analyzers; comparable product lines targeting utility/industrial users.
• Amprobe (a Fluke brand): Manufacturer of electrical test tools including multimeters, clamp meters, and insulation testers; comparable product categories with broader global reach.

Regional players

• Sagana Instruments (Standard Electric Works): Indian manufacturer of insulation testers, earth testers, multimeters, and related electrical instruments; directly comparable Indian-domestic competitor with similar BIS-conformance positioning.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Cambridge Instruments & Engineering Co