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Testo - On Sale Now! Save up to 7%


On Sale! Up to 7% off on Testo products at In The National Interest. Hurry! Limited time offers. Offers valid only while supplies last.



Testo 0560 0511 Pocket Pro Absolute Pressure and Altitude Meter, 300 to 1200 hPa Range, 0.1 hPa Resolution, +/- 3.0 hPa Accuracy, 2 Type AAA Battery
Testo 0560 0511 Pocket Pro Absolute Pressure and Altitude Meter, 300 to 1200 hPa Range, 0.1 hPa Resolution, +/- 3.0 hPa Accuracy, 2 Type AAA Battery
In Stock
$170.85

mpn: 0560 0511, ean: 4029547008276,

Testo 511 measures absolute pressure with an accuracy of +/-3 hPa. It is then converted to barometric air pressure by entering on-site height above sea level. Barometric elevation measurement between two points is also possible. Measures absolute pre...


Testo 0563 0510 01 510 Differential Manometer Kit
Testo 0563 0510 01 510 Differential Manometer Kit
In Stock
$159.00

mpn: 0563 0510 01,

The Testo 510 digital manometer is an all in one, low pressure measurement solution. The 510 can measure total external static pressure, differential pressure, duct velocities, manifold pressures, and air flow with pilot tube (optional). carry out pr...


Testo 0390 0047 Spare O2 Sensor for Testo 327-1, 327-1 O2 Flue Gas Analyzer
Testo 0390 0047 Spare O2 Sensor for Testo 327-1, 327-1 O2 Flue Gas Analyzer
In Stock
$106.00

mpn: 0390 0047,

Testo spare O2 measuring cell for Testo 327-1, 327-1 O2 flue gas analyzer.Spare O2 measuring cell. For Testo 327-1, 327-1 O2 flue gas analyzer. ...


Testo 0572 1560 174T 1-Channel Mini Temperature Data Logger with Locking Wall Holder and Batteries, -22 to 158 Degree F Range, +/-0.9 Degree F Accuracy
Testo 0572 1560 174T 1-Channel Mini Temperature Data Logger with Locking Wall Holder and Batteries, -22 to 158 Degree F Range, +/-0.9 Degree F Accuracy
SKU: #TESTO0572 1560
In Stock
$71.56

sku: TESTO0572 1560, mpn: 0572 1560,

Testo 174 data loggers offer easy data collection, dual mode readout, USB interface, and SD card. ideal for equipment commissioning and troubleshooting. Inexpensive to install in multiple locations so you can perform a complete analysis. Record measu...


Testo 0560 1510 510I Differential Pressure Manometer Smart and Wireless Probe, 1'' Height, 1'' Width, 6'' Length
Testo 0560 1510 510I Differential Pressure Manometer Smart and Wireless Probe, 1" Height, 1" Width, 6" Length
In Stock
$92.65

mpn: 0560 1510, ean: 4029547018312,

The Testo 510I SMART probe is a Wireless differential pressure probe used for accurate low-pressure measurements. The Testo 510I is great for measuring pressure in manifolds, static pressure, and pressure drops in buildings or ventilation systems. Us...


Testo 0560 0540 Pocket Pro Light Intensity Meter, +/- 3 Accuracy, 2 Type AAA Battery
Testo 0560 0540 Pocket Pro Light Intensity Meter, +/- 3 Accuracy, 2 Type AAA Battery
In Stock
$156.00
$144.99
You Save: 7%

mpn: 0560 0540, ean: 4029547008283,

The sensor of the testo 540 is similar to the spectral sensitivity of your eye which makes it ideal for measuring actual light intensity. The 540 features a convenient hold function and displays max/min values on a large backlit display. It's a handy...


Testo 557KIT (0563 2557) Digital 4-Valve Manifold Kit with Bluetooth, External Vacuum Probe, and Hoses
Testo 557KIT (0563 2557) Digital 4-Valve Manifold Kit with Bluetooth, External Vacuum Probe, and Hoses
In Stock
$530.65

mpn: 0563 2557,

The Testo 557KIT (0563 2557) Digital 4-Valve Manifold Kit opens up new possibilities for efficient analysis and documentation thanks to the integration of Bluetooth connectivity with the testo Refrigeration App. You can clearly read measurement data,...


Testo 550KIT (0563 2550) Digital 2-Valve Manifold Kit with Bluetooth & Hoses
Testo 550KIT (0563 2550) Digital 2-Valve Manifold Kit with Bluetooth & Hoses
In Stock
$296.65

mpn: 0563 2550,

The Testo 550KIT (0563 2550) Digital 2-Valve Manifold Kit opens up new possibilities for efficient analysis and documentation thanks to the integration of Bluetooth connectivity with the testo Refrigeration App. You can clearly read measurement data,...


Testo 270 (0563 2701) Cooking Oil Tester, Total Polar Materials and Temperature
Testo 270 (0563 2701) Cooking Oil Tester, Total Polar Materials and Temperature
In Stock
$575.00

mpn: 0563 2701,

It may not look it at first glance, but frying is a complex and dynamic process. Cooking oil, as it fries foods, breaks down because of interactions between the oil, food, heat, and oxygen in the air. By-products, or total polar materials (TPM) are p...


Testo 416 Digital Mini Vane Anemometer, 0.63'' Head Diameter, 0.6 to 40 m/s Range, 0 to 60° C Temperature
Testo 416 Digital Mini Vane Anemometer, 0.63" Head Diameter, 0.6 to 40 m/s Range, 0 to 60° C Temperature
In Stock
$503.66
$501.23

mpn: 0560 4160,

The Testo 416 anemometer with telescoping mini-vane probe reaches into ducts to measure air velocity in m/s and fpm and air temperature in degrees C and F; calculates air flow volume in m3/h and cfm; and has hold, maximum, minimum, and mean functions...


SSEYL Testo 175 H1 - Temperature and humidity data logger Testo 175-H1
SSEYL Testo 175 H1 - Temperature and humidity data logger Testo 175-H1
In Stock
$582.00
$580.00

mpn: Testo 175 H1, ean: 0702756122530,

*The testo 175 H1 temperature and humidity data logger has a large dispay and alarm indication that makes it ideal for continuous monitoring of ambient temperature and humidty. The 175 H1 has an external, stub type humidity sensor, making it best sui...



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