Thermometers, Hygrometers & Other Meters

National Hydro Group is your online source for Thermometers, Hygrometers & Other Meters. If you cant find the Thermometers, Hygrometers & Other Meters that meet your needs please give us a ring or send a quick email so we can help you find exactly what you're looking for.
Milwaukee Instruments Dissolved Oxygen Meter-NWGSupply.com
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$301.99
$241.41

Milwaukee Instruments Dissolved Oxygen Meter

Milwaukee Instruments

Entry level, inexpensive Dissolved Oxygen Portable Meter for fast and reliable results. The MISM600 is a compact Portable Dissolved Oxygen meter wi...

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$301.99
$241.41
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Mondi Mini Greenhouse Thermo-Hygrometer-NWGSupply.com
Save 2%
$16.50
$16.10

Mondi Mini Greenhouse Thermo-Hygrometer

Mondi

Ensure the perfect temperature and humidity for plants through all growing stages with the Mondi Mini Greenhouse Thermo-Hygrometer. The thermo-hygr...

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$16.50
$16.10
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Grower's Edge Digital Thermometer / Hygrometer w/ Remote Sensor-NWGSupply.com
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$39.95
$33.53

Grower's Edge Digital Thermometer / Hygrometer w/ Remote Sensor

Growers Edge

Large screen digital readout. Wireless sensor transmits up to 50 feet. Expandable to accept 2 additional sensors. Waterproof casing is chemical and...

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$39.95
$33.53
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Ice Box Thermostat-NWGSupply.com
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$193.99
$184.93

Ice Box Thermostat

Hydro Innovations

Designed to regulate the air conditioning through the Ice Box, this thermostat controls power to the fans with separate settings for lights on and ...

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$193.99
$184.93
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HM Digital Brix Refractometer (SO Only)-NWGSupply.com
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$335.00
$251.25

HM Digital Brix Refractometer (SO Only)

HM Digital

The HM Digital® Brix Refractometer is designed to accurately measure the sugar content of fluids. The sugar content is defined as a percentage of t...

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$335.00
$251.25
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Mondi Mini Greenhouse Thermo-Hygrometer-NWGSupply.com
Save 7%
$16.95
$15.68

Mondi Mini Greenhouse Thermo-Hygrometer

Mondi

This revolutionary product mounts anywhere on your Mondi Mini Greenhouse and reads the temperature and humidity inside the dome. In combination wit...

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$16.95
$15.68
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Grower's Edge Large Display Thermometer / Hygrometer-NWGSupply.com
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$23.95
$18.13

Grower's Edge Large Display Thermometer / Hygrometer

Growers Edge

Measures indoor/outdoor temperature & indoor humidity. Stores the Min./Max. values of the indoor/outdoor temperature and indoor humidity. Switc...

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$23.95
$18.13
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Compact-IR Thermometer-NWGSupply.com
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$39.75
$36.73

Compact-IR Thermometer

Oakton

The economical infrared Compact-IR Thermometer fits in a pocket and takes surface temperature readings of any liquid, solid or semi-solid. Operatio...

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$39.75
$36.73
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Active Air Hygro-Thermometer-NWGSupply.com
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$21.95
$18.44

Active Air Hygro-Thermometer

Active Air

You'll find multiple uses for and multiple places to put this Active Air hygro-thermometer. Check the large number LCD display from a distance, and...

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$21.95
$18.44
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Active Air Indoor-Outdoor Thermometer w/Hygrometer-NWGSupply.com
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$19.95
$16.76

Active Air Indoor-Outdoor Thermometer w/Hygrometer

Active Air

Active Air's indoor-outdoor thermometer gives you more. Made of sturdy materials to stand up to the climate of your indoor grow room, this essentia...

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$19.95
$16.76
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Sure Test Temperature and Relative Humidity Data-Logger-NWGSupply.com
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$99.95
$86.95

Sure Test Temperature and Relative Humidity Data-Logger

Sure Test

Track, plot, log and create PDF's or Excel reports with The Sure Test® Temperature and Relative Humidity Data-Logger. Easy to use - plug and play w...

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$99.95
$86.95
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Sure Test® GroGuru Base with Cellular Modem-NWGSupply.com
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$499.00
$420.00

Sure Test® GroGuru Base with Cellular Modem

Sure Test

The Sure Test® GroGuru Base (Collector) is used to collect data from the various Stems (sold separately) with sensors. The Base then forwards this...

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$499.00
$420.00
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Active Aqua Floating Thermometer-NWGSupply.com
Save 4%
$2.09
$2.00

Active Aqua Floating Thermometer

Active Aqua

The Active Aqua floating thermometer delivers easy and accurate readings of your water temperature. This gauge floats and has a pressure sensitive ...

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$2.09
$2.00
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HM Digital LeakBlock Sensor-NWGSupply.com
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$53.00
$44.45

HM Digital LeakBlock Sensor

HM Digital

The HM Digital® LeakBlock Sensor can be used for numerous applications to avoid flooding and unnecessary leaks. The LeakBlock Sensor is ideal for t...

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$53.00
$44.45
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Thermostat Cruise Temp (heat or cool)-NWGSupply.com
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$99.95
$97.20

Thermostat Cruise Temp (heat or cool)

DL

This thermostat has a gas filled coil for great reliability. Give or take 2 degrees of accuracy. Turns fan ON when the temperature has reached 4 de...

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$99.95
$97.20
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Grower's Edge Jumbo Wall Thermometer-NWGSupply.com
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$4.95
$4.72

Grower's Edge Jumbo Wall Thermometer

Growers Edge

Grower's Edge Jumbo Wall Thermometer measures temperature for indoor and outdoor environments. It measures temperature in Fahrenheit and Celsius. G...

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$4.95
$4.72
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Grower's Edge Wireless Remote Sensor-NWGSupply.com
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$23.95
$19.53

Grower's Edge Wireless Remote Sensor

Growers Edge

Large screen digital readout. Wireless sensor transmits up to 50 feet. Expandable to accept 2 additional sensors. Waterproof casing is chemical and...

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$23.95
$19.53
Save 18%
MONDI Mini Greenhouse Thermo-Hygrometer-NWGSupply.com
Save 25%
$19.95
$14.99

MONDI Mini Greenhouse Thermo-Hygrometer

Mondi

The Mondi Mini Greenhouse Thermo-Hygrometer mounts to the side of your mini greenhouse and reads temperature and humidity inside the dome. It ensur...

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$19.95
$14.99
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Digital Brix Refractometer Range - 0 to 85-NWGSupply.com
Save 18%
$206.99
$170.19

Digital Brix Refractometer Range - 0 to 85

Milwaukee Instruments

Digital Sugar Refractometer for general purpose with automatic temperature compensation (ATC).Range 0-85% Brix, resolution 0.1%, units come with ba...

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$206.99
$170.19
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Wireless Weather Station w/Moon Phase-NWGSupply.com
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$35.99
$30.23

Wireless Weather Station w/Moon Phase

La Crosse

Track what the weather is doing wirelessly. Receive outdoor temperature & humidity indoors. Included outdoor transmitter that has a range withi...

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$35.99
$30.23
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Temperature/Humidity Gauge-NWGSupply.com
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$24.95
$23.06

Temperature/Humidity Gauge

Hydrofarm

Get temperature and humidity levels at a glance -- even from across the room. The Active Air temperature humidity gauge has a familiar clock face w...

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$24.95
$23.06
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Floating Thermometer-NWGSupply.com
Save 71%
$6.89
$2.00

Floating Thermometer

Active Aqua

The Active Aqua floating thermometer delivers easy and accurate readings of your water temperature. No more worries about losing your tools to the ...

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$6.89
$2.00
Save 71%
Pro Gro Kit Connects 24 plants-NWGSupply.com
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$349.95
$295.95

Pro Gro Kit Connects 24 plants

Earth and Grow

Earth & Grow is the world's first available growing system that maximizes plant growth, health and production by reconnecting container-grown p...

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$349.95
$295.95
Save 15%