Apogee Instruments MQ-650: Underwater ePAR Quantum Meter Bundled with AM-320 Water Submersible Sensor Wand Includes Apogee Instruments Neoprene Case

$49.99

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

Blue Sea 8238 AC Digital Ammeter

$9.49

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

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

$48.99

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

$13.48

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

$177.99

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

$53.32

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

$13.99

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

Dive Light for Underwater Photography, 25000Lumens Super Bright Diving Flashlight, 100M Waterproof Underwater Video Light with Type-C Charging, Professional for Underwater Lighting

$35.99

Instant Ocean SeaTest Hydrometer

$10.99

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

$236.99

Dive Light,LetonPower TS S 10000Lumens 100m Underwater Video Light,Diving Flashlight,Waterproof Flashlight with Type-C Charging for Professional Under Water Sports

$19.99

Auto Meter 5732 Phantom Mechanical Water Temperature Gauge

$99.99

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

$9.99

Extech DO600 Waterproof ExStik II Dissolved Oxygen Meter

$28.92

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

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

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

DYP-A22 2-300cm Small Angle Optional 30 40 45 60 Water Level Ultrasonic Digital Sensor (PWM, 1)

$12.99

QYSEA FIFISH V6 Expert M200A Underwater Drone with Robotic Arm, AI Vision Lock Portable ROV with Q-Interface, Underwater Robot with Industrial Case, 6 Hours Working Time, 4K Camera, 660ft Dive

$499.99

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

$81.96

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

$6.99

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

$25.16

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

$155.99

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

SABRE Water Leakage Alarm, 110 dB Alarm, Audible Up To 1,500-Feet (457-Meters), All Direction Water Sensor, High and Low Volume Settings, Battery Test Button

$22.97

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

$238.99

Metal Detector for Adults Professional - IP68 Waterproof Metal Detector, High Accuracy, [All & Disc, Notch & Pinpoint Modes], 10” Waterproof Search Coil, Adjustable Light, 2023 New Version

$139.99

Milwaukee Instruments MW600 Standard Portable Dissolved Oxygen Meter

$889.99

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

P3 P0550 Water Meter

$49.99

Bennett Marine ATPSENSTD AutoTrim Pro Sensor Kit

$4.99

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

HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, +/- 2% Readout Accuracy (Magnetic Body)

$16.39

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

Ambu Blue Sensor Q Electrode 25/Pouch

$100.49

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

Spectra Precision HL760 Laser Level Receiver, Front and Back LCD Displays, Digital Readouts, Select Units of Measure, Waterproof

$175

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

$16.21

ORCATORCH D530V 1200 Lumen Scuba Diving Video Light 140 Degrees Super Wide Beam Angle, Underwater 150 Meters IP68 Waterproof Photography Light with Battery Power Indicator and Ball Joint

$29.99

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

$76.99

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

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

MICTUNING MIC-VM-Blue Voltmeter (DC 12V LED Digital Display Waterproof for Boat Marine Vehicle Motorcycle Truck ATV UTV Car Camper Caravan Blue Digital Round Panel)

$9.69

Digital Tester Smart Bluetooth Dissolved Oxygen Meter,Dissolved Oxygen Test Kit with Electrode Filling Fluid,Dissolved Oxygen Meter Range 0.0-30.0mg/L for Aquarium Water Test

$339.15

CQRobot Ocean: Non-Contact Water/Liquid Level Sensor Compatible with Arduino, Raspberry Pi and Other Motherboards. for Industrial Production, Aquarium, Chemical Liquid, Agriculture, Gardening, etc.

$9.99

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

$59.99

Extech 45158 Mini Waterproof Thermo Anemometer and Humidity Meter

$50.59

Extech 45118 Mini Waterproof Thermo Anemometer

$158

Metal Detector Handheld Pinpointer Waterproof - IP68 with Sand Shovel Professional 360° Search Pin Pointer Wand High Sensitivity Portable Detectors Treasure Pinpointing Finder Probe for Kids, Adults

$99.99

Shimshon Waterproof Camera Waterproof Digital Camera 48MP Image 2.7K Video Underwater Camera for Snorkeling Dual Screen 16X Digital Zoom Flashlight 10 Feet Waterproof (Yellow)

$99

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

$182.27

Extech EC500 Waterproof ExStik II pH/Conductivity Meter

$11.99

[Dual-Lens] Endoscope Camera with Light, 1920P Borescope Inspection Camera with 8+1 Adjustable LED Lights, Semi-Rigid Snake Cable 16.5FT, IP67 Waterproof for iPhone, iPad, Samsung,Cool Gadgets for Men

$32.99

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

$16.99

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

2Pcs JSN-SR04T Integrated Ultrasonic Distance Measuring Sensor Transducer Module Waterproof

$12.99