Field notes
Blog
Hands-on reviews of the instruments we sell, written by the engineers who specify them. What each tool does well, where it falls short, and who should buy it.
Dry block vs calibration bath: how each temperature calibrator works, temperature ranges, stability and uniformity, immersion depth, and choosing the right technology for field or lab.
17 Aug 2026
More reviews
ISO 17025 calibration equipment guide: what the standard requires, core pressure, temperature, and mass standards, traceability, and selection criteria.
16 Aug 2026
What belongs in a field calibration technician’s kit: multimeters, loop calibrators, HART communicators, pressure and temperature references, and the documentation tools that make results defensible.
13 Aug 2026
What drives HART communicator pricing: feature scope, documenting capability, device library, accuracy, and accessories. Fluke 754, Fluke 725, and alternatives.
12 Aug 2026
Pressure transmitter calibration for smart vs analog transmitters: five-point testing, zero and span, sensor and D-A trims, HART communication, and choosing the right reference equipment.
12 Aug 2026
Field, bench, or lab? How to choose the right pressure calibrator class for your work, with selection criteria for accuracy, range, media, and HART.
11 Aug 2026
What to look for in a pressure calibrator supplier for oil and gas: accuracy, traceability, HART support, brand coverage, service, and lead time.
11 Aug 2026
A 640 x 480 detector with a 2000 C ceiling and a price that needs justifying. Who actually needs this much camera.
10 Aug 2026
Fall-of-potential ground testing with two spikes and one button. Rugged, deliberately simple, and what that simplicity costs.
10 Aug 2026
A 200 A clamp meter that still reads down to milliamps. The low-current end is the reason to buy it.
10 Aug 2026
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