MQ-510: Underwater Full-Spectrum Quantum Meter Bundled with AM-320 Water Submersible Sensor Wand Includes Apogee Instruments Neoprene Case

$59.8

Apogee Instruments MQ-500 Full-Spectrum Quantum PAR Meter & Telescopic Wand Bundle - Digital PPFD Meter for LED Greenhouse Grow Lights, Sunlight, & Plant Monitoring

$603

DR.ÖTEK Metal Detector Pinpointer IP68 Fully Waterproof Underwater Handheld Pin Pointer Wand, LCD Screen, Small Metal Detector for Adults, High Accuracy, 3 Alert Modes, for Gold, Relics

$25.99

Apera Instruments SX751 pH/ORP/DO/Conductivity/TDS/Salinity/Resistivity/Portable Handheld Multiparameter Meter Kit, Silver

$236.99

AutoMeter Gauge, Water Press, 2 1/16", 35Psi, Mechanical, Marine White (200772),Multi

$81.96

Apogee Instruments MQ-610: 400-750 nm ePAR Meter with AM-310 Telescopic Wand - Meter for Extended Range LED Greenhouse Grow Lights, Sunlight, and Plant Care

$82.99

BLLYOGU Water Temperature Gauge,100-250℉ 2" 52mm Water Temp Thermometer Meter Kit with Sensor for Marine Boat, Ship, Car, Truck, Vehicle, Automotive, DC12V

$28.62

YSI 601026 EcoSense Kit with ODO200M Dissolved Oxygen Meter, 10M Probe and Case

$59.99

Bennett Marine ATPSENSTD AutoTrim Pro Sensor Kit

$4.99

HM Digital 716160 COM-100 Waterproof Professional Series Combo Meter, 7", White/Purple

$53.32

Yellow Jacket 78075 Water Manometer Made of a Durable Plastic

$33.23

Auto Meter 7537 Phantom II 2-1/16" 100-250 F Short Sweep Electric Water Temperature Gauge

$177.99

Apera Instruments AI480 DO850 Optical Dissolved Oxygen Meter Kit, with 10 Ft Optical DO Probe, Hassle-Free Testing Experience

$45.5

Apera Instruments SX716 Portable Lab Dissolved Oxygen DO Meter, Waterproof, Automatic Temperature, Salinity Compensation and Calibration Silver AI461

$28.92

AccuMed CMS-50D1 Fingertip Pulse Oximeter Blood Oxygen Sensor SpO2 for Sports and Aviation. Portable and Lightweight with LED Display, 2 AAA Batteries, Lanyard and Travel Case (White)

$24.99

Apera Instruments AI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, ±0.01 pH Accuracy, Lcd display

$45.88

Blue Sea 8238 AC Digital Ammeter

$9.49

MEASUREMAN 2" Dry and Utility Pressure Gauge, Swimming Pool Filter Pressure Gauge, Spa, Aquarium, Water Pressure Gauge, 1/4"NPT Lower Mount 0-60Psi x 2 pcs

$11.93

SAKOBS Metal Detector Pinpointer Wand: 5" Detection Depth, IP68 Fully Waterproof, Up to 66 Feet Underwater, 360°Detection Handheld Pin Pointer, 3 Modes (Buzzer, Vibration,Sound) for Adults & Kids

$29.99

KAOLALI Digital GPS Speedometer Waterproof (Shipped from USA) Gauge COG ODO Trip Voltmeter Auto Gauge Meter 9-32V for Boat Car Truck Motorcycle Silver White) 85MM (3.34‘’)

$65.99

WATERWICH 2" 52mm Water Temperature Gauge 100-250℉ with LED Backlight Water Temp Thermometer Meter Kit DC12V for Ship Car Truck Vehicle Automotive Boat Marine

$14.99

bayite Volt Amp Meter, DC 5-100V 100A Waterproof Dual Display Current Voltage Meter, Digital Mini Ammeter Voltmeter Gauge with Hall Effect Sensor Current Transformer

$38.88

Instant Ocean SeaTest Hydrometer

$10.99

2PCS Battery Meter, Waterproof DC 12V Voltmeter Waterproof LED Digital Display Voltage Gauges Round Car Voltmeters Meter Voltage Tester Gauge Meter for Marine Car Motorcycle Truck Boat RV, Short Body

$12.99

Auto Meter 5732 Phantom Mechanical Water Temperature Gauge

$99.99

Extech 45118 Mini Waterproof Thermo Anemometer

$158

Mitutoyo 293-185-30 QuantuMike DIGIMATIC Micrometer, 0-1", IP65, 0.00005", NO SPC, Black/Gray

$48.99

Extech 45158 Mini Waterproof Thermo Anemometer and Humidity Meter

$50.59

Extech DO600 Waterproof ExStik II Dissolved Oxygen Meter

$28.92

ELING Auto Marine Digital Hour Meter Gauge 52mm(2") with Backlight Waterproof

$13.99

AUCELI Car Digital Vacuum Gauge, Universal Meter Kit, 2" 52mm & Blue LED Light Display

$16.21

KAOLALI Digital GPS Speedometer Gauge Waterproof (Shipped from USA) COG ODO Trip Voltmeter Auto Gauge Meter 9-32V for Boat Car Truck Motorcycle Black Silver 85MM (3.34‘’)

$16.85

Auto Meter 5837 Phantom Electric Water Temperature Gauge, 2 5/8"

$155.99

2PCS Battery Meter, Waterproof DC 12V Voltmeter Waterproof LED Digital Display Voltage Gauges Round Car Voltmeters Meter Voltage Tester Gauge Meter for Marine Car Motorcycle Truck Boat RV

$9.69

Pressure Sensor, MPXV7002DP Breakout Pressure Sensor Board Transducer APM2.5 Electric Components

$14.26

Apera Instruments, LLC-AI314 Premium Series EC60 Waterproof Conductivity Pocket Tester Kit, ±1% F.S Accuracy, Easy Switch of EC/TDS/Salinity, Replaceable Probe

$162.87

Milwaukee Instruments MW600 Standard Portable Dissolved Oxygen Meter

$889.99

Water Depth Sensor (Liquid Level Sensor), 32Ft. (10 Meter)

$13.48

MEIKON Seafrogs Diving Essential Accessory Ball Arm Clamp Three Cut Out Hole Lighting Arm System Fixed Mount Waterproof Case Tray Attachment CP-3

$27.99

FIFISH V6 Underwater Drone Kit with with EPP Case, QYSEA AI Vision Lock 360° Omnidirectional Movement Underwater ROV with 4K Camera, Portable Robot with VR Control, 166° UWA (330ft Dive)

$195.54

QYSEA FIFISH V6 Expert M200A Underwater Drone with Robotic Arm & Industrial Case, Upgraded ROV with Q-Interface, 4K Camera, VR Control, 6000lm LED, 200M Cable, Omni-Directional Movement

$22.79

Anemometer Handheld, AP-816B Wind Speed Meter with Protective Shell for Measuring Wind Speed Temperature and Max/Average/Current, Mini Anemometer for Windsurfing Sailing Fishing Outdoor Activities

$32.99

2'' 52mm Universal Car Digital & Analog LED Water Temp Temperature Gauge Meter with 1/8npt Sensor

$17.86

Digital Vacuum Gauge Kit, 2-100Pa High Precision Handheld Vacuum Meter Tester,with Buzzer Three-way Connection Extended Rod for Atmospheric Environment 0-50°C

$245.04

Ambu Blue Sensor Q Electrode 25/Pouch

$100.49

Apera Instruments Premium Line ORP60 Pocket ORP Tester Kit, Replaceable Probe, 1 mV/±0.2% F.S Accuracy, ±1000 mV Range

$5.99

Invisible Dive Housing Case for Insta360 X3, Underwater Dive Protective Shell Waterproof Up to 50m (164ft) with Bracket Accessories

$16.99

Dissolved Oxygen Meter, Detachable Dissolved Oxygen Meter Digital Screen Display Dissolved Oxygen Sensor for Freshwater Aquaculture, Seawater Aquaculture, Swimming Pool(A)

$76.99

DAE WP-300P 3" Woltmann Helix Water Meter, Pulse Output, Gallon

$238.99

Minelab PRO-FIND 35 Waterproof Pinpointer Metal Detector for Experts with Tone ID & Adjustable Sensitivity (Built-in Flashlight, Holster & Lanyard Included)

$25.16

Insta360 X3 Invisible Dive Case(New) - Waterproof Up to 50m (164ft)

$9.99

Auto Meter 4337 Ultra-Lite Electric Water Temperature Gauge, Silver

$18.99

Sea frogs Double Ball Arm 4.0" Essential Underwater Photography Gear Lighting System Aluminum Alloy Diving Equipment Accessory Lightweight Arms AM-9

$17.99

PULUZ 50m/164ft Invisible Dive Case for Insta360 X3 Underwater Waterproof Housing Cover Protective PC Sealed Shell Photography Housings with Bracket Camera Accessories

$19.99

Digital Magnetic Level Tool - 10 Inch Torpedo Level and Protractor - Master Precision - IP54 Dustproof and Waterproof - Includes: 2 AAA Batteries and Carrying Case

$6.59

YSI DO200 Kit EcoSense DO 200 Dissolved Oxygen Meter Kit

$169.99

Oxygen Detector by Forensics | 2 Year Battery Life | 3 Year Sensor | USA NIST Calibration | Drop-Proof & Water-Proof | Rubber Soft-Touch | 0-30% O2 |

$12.15

ZeroWater TDSmeter-20 ZT-2 Electronic Water Tester, hand held, Blue

$6.99

Fluke AS400 Probe Accessory Kit, For the VPS400 Probes

$44.77

Auto Meter 8547 Factory Match 2-1/16" Electric Pyrometer (0-2000 Degree F, 52.4mm)

$606.99