Great performance in portable instruments
• Lightweight and very portable
• Accuracy to ±0.25 °C
• RS-232 interface
• Easy to recalibrate

If you’ve been using a dry well calibrator or dry block calibrator for field work, you know there’s a lot more to them than temperature range and stability. Size, weight, speed, convenience, and software are also significant.

A field dry well needs to be portable, flexible, and suitable for high-volume calibrations or certifications. If it's not, you’ll soon forget about the great stuff the sales rep told you and realize what you’ve really bought.

At Fluke Calibration, we use dry well calibrators every day in our manufacturing and calibration work, and we know what makes a dry well easy and productive to use—which is exactly how users describe our series of field dry wells. These dry wells work for you instead of the other way around.

The NEW standard for rugged



The Fluke 27 II and 28 II digital multimeters set a new standard for operation in harsh conditions with the features and accuracy to solve most electrical problems. Both gauges are IP 67 rated (water and dust repellent), MSHA approved, extended operating temperature range of -15°C to +55°C (5°F to 131°F, -40°C for s /s 20 minutes) and 95 % humidity, and has been designed and tested to withstand a 3 m (10 ft) drop. The Fluke 20 Series Multimeter is designed to work in the toughest environments.

Modern design with a knurled thumb wheel for easy use when taking internal and external depth and step measurements.

Dual readout giving instant inch/metric conversion at the touch of a button.

Zero reset at any point, large clear display, error-free operation, fast response speed. Non-output type.



Resolution: 0.01mm/0.0005".



Extra batteries available - Order Code EDI -904-4000K.

• 3 phase indication

• Indication of phase rotation

• Clear LCD display

• No battery required