Duncan Instruments Canada Ltd. - Electronic Measurement since 1968

We Calibrate Thousands of Instruments a Year

In-house experts. Fast turnaround. Trusted since 1968.

Our Fused Test Leads: Built for Safety

Cold-weather flexible. German fuses. Technician-trusted.

Dielectric Strength Testers—Trusted by Canada’s Best

Rugged, reliable, and calibrated by the same experts who use them.

Current Transformers—CSA Approved, Class 1 Accuracy

Precision-engineered. Ready to ship. OEM pricing available.

Why Buy from Duncan Instruments?

We’ve been Canada’s trusted source for electrical test equipment
since 1968.

But we’re more than just a supplier
we calibrate and service the same gear we sell.

That means you get reliable products, expert support, and no surprises.

We don’t just ship boxes. We stand behind what’s inside.

Recognized by Google

We’re proud to be recognized by Google as a Top Quality Store — based on customer satisfaction, accurate shipping, and reliable service.

Top Quality Store badge by Google

Tools & Tips for Technicians

Current Transformer Selection Made Easy – A Professional’s Guide

Current Transformer Selection Made Easy – A Professional’s Guide

Need a CT fast? This guide makes it easy to select the right current transformer for your project. We break down CT ratio, window size, mounting style, and accuracy — with clear links to the models we stock in Canada.

Understanding Precision Power Analyzers: A Guide for Engineers and Metrologists

Understanding Precision Power Analyzers: A Guide for Engineers and Metrologists

Power analyzers are essential tools for engineers and metrologists working with high-precision systems. Learn what to look for and why Infratek sets the standard.

🧠 How to Choose the Right Universal Programmer: FAQ from Duncan Instruments

🧠 How to Choose the Right Universal Programmer: FAQ from Duncan Instruments

🧠 How to Choose the Right Universal Programmer: FAQ from Duncan Instruments Whether you’re working on automotive electronics, industrial equipment,...
View all

Proudly Representing the Following Global Test and Measurement Leaders