Reviews Handheld Distance Measuring

HiLetgo Analog Current Meter Sensor Module AC 0~5A Ammeter Sensor Board Based on TA12-100 for Arduino

  • Operating Principle -- Ultrasonic hc-sr04 distance measuring transducer sensor, it consists of ultrasonic transmitter, receiver, and control circuit..
  • HC-SR04 ultrasonic sensor module -- Using IO trigger for at least 10us high level signal, when triggered it sends out a series of 40KHz ultrasonic pulses and receives echo from an object, the duration of the signal is the time from sending ultrasonic to returning..
  • Test Distance Formula -- The distance between the unit and the object is calculated by measuring the traveling time of sound and output it as the width of a TTL pulse,hc-sr04 test distance following formula -- L = 1/2 × T × C ( L is the distance, T is the time between the emission and reception, and C is the sonic speed ).
  • Package Include -- 5 X HC-SR04 Ultrasonic Sensors , 10 X Female-Male Dupont Cables , 10 X Female-Female Dupont Cables , 3 X HC-SR04 Mounting Bracket.
Check Stock

ZHJAN 12" Distance Measuring Wheel in Feet and Inches,Collapsible Rolling Measurement Wheel Measures Up To 9999.9 ft,Walking Measuring Wheel with Key 0 Function.

  • 【9999.9 Maximum Measuring Distance】Collapsible rolling measurement wheel measures up to 9999.9 ft，U.S. measuring units, measures in feet and inches.The measuring accuracy of distance measuring wheel is ± 0.5%..
  • 【Accurate Measurement】The measuring wheel in feet adopts gear counting and does not need to install batteries.The forward count increases and the backward count decreases. If the destination is exceeded, you can go backward to avoid wasting your time..
  • 【Multifunction】ZHJAN measure wheel has one button reset,clear and accurate counter larger bracket, strong and firm joint,Light and firm folding rod,TPR tires with increased friction,and original position mark to help you complete your work..
  • 【Easy to Carry】The measurement wheel is light but strong.The size after twice folding is 16in, and the size after unfolding is 40in.It is long enough after being unfolded so that you will not feel backache after long-term use..
  • 【Multiple Applications】The measuring wheel for construction is suitable for a variety of people: real estate appraisers, construction workers....
Check Stock

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

  • FOR SCIENTISTS & SERIOUS GROWERS - Designed by world-renowned crop physiologist, Bruce Bugbee, PhD, the MQ-500 full-spectrum quantum meter is the premium tool of choice among leading scientists and growers for accurately measuring the photosynthetically active radiation (PAR) from all light sources. Package includes an AM-310 telescopic sensor wand that extends up to 33 inches for measuring hard-to-reach places and a neoprene carrying case..
  • MEASURING PAR IS CRITICAL - An accurate PAR meter is critical for measuring the intensity of light used in the precision growing of plants and other photosynthetic organisms in greenhouses, growth chambers, farms, gardens, aquariums, and additional agricultural systems..
  • QUALITY QUANTUM METER - Unlike cheaper LUX or footcandle sensors which are sometimes marketed as grow light meters, but are meant for measuring light for human vision, our meters feature a laboratory-grade PPFD (photosynthetic photon flux density), or “quantum,” optical detector precisely calibrated to measure the light intensity in µmol m-2 s-1 of the specific color wavelengths emitted by LEDs, HPS, MH, sunlight, and other light sources utilized by plants for photosynthesis..
  • EXTREMELY ACCURATE & STABLE - Precisely measures and combines the in....
Check Stock

Small Aquarium Underwater Ambience with Very Light Bubbling

  • FOR SCIENTISTS & SERIOUS GROWERS - Designed by world-renowned crop physiologist, Bruce Bugbee, PhD, the MQ-510 full-spectrum underwater quantum meter is the premium tool of choice among leading scientists and serious growers for accurately measuring the photosynthetically active radiation (PAR) underwater..
  • MEASURING PAR IS CRITICAL - An accurate PAR meter is critical for measuring the intensity of light used in the precision growing of plants and other photosynthetic organisms in greenhouses, growth chambers, farms, gardens, aquariums, and additional agricultural systems. Our underwater quantum meters are specifically designed to measure the intensity of light underwater for biological, chemical, and physical processes in natural waters and aquariums..
  • UNDERWATER ACCURACY - Underwater PAR measurements can read low when a quantum sensor is calibrated for air. The MQ-510 applies an immersion effect correction factor to get instant, accurate measurements underwater. Precisely measures and combines the intensity of all photons between 400 and 700 nm to give a single PAR reading in µmol m-2 s-1 within 5 % uncertainty. Unlike hobby-grade PAR meters, our meter has a ....
Check Stock

eTape16 ET16.75-DB-RP Digital Tape Measure, 16', Inch and Metric (Black)

  • 2-in-1 MEASURE- Laser Tape Measure combines two accurate measuring tools into one easy-to-use solution: a laser distance measurer for measuring big spaces up to 65 feet long and a traditional 16-foot tape measure for smaller tasks that require short-span precision.
  • ONE HAND, ONE PERSON OPERATION- Simple, one button operation allows for fast and easy long distance laser measurements accurate to within an 1/8-inch press button once to begin measuring.
  • HIGH VISIBILITY DISPLAY- Large white digits on a black backlit screen provides easy reading at any angle in feet, inches and fractions of an inch.
  • REAL-TIME MEASURING- Walk-off measurements from the wall and other surfaces to find precise distances with continuous measurement that adjusts as you move closer and farther from target, just like a tape measure.
Check Stock

Magpie VH-80, Bilateral Laser Distance Meter + 2 Professional Magnetic Laser Target Plates

  • MEASURE DISTANCES FAST AND EFFORTLESSLY: Do you want to measure long distances, but there’s no one around to help you? The world’s first bilateral laser measurer is the tool you need to get the job done conveniently. This unique measuring device can measure any distance up to 262ft (80m) safely and conveniently without having to strain your body or use dangerous positions. Every professional construction worker and DIY'er needs this smart gadget..
  • Essential tool for Laser Distance Meter and Laser Level products. Best target plate for laser distance meter, laser level, laser measure, cross line lasers, alignment, rotary lasers, and all green and red beam laser level products (compatible with green and red lasers)..
  • Buy one and get one free! Two target plates per package. Especially for the VH-80 Magpie Bilateral Laser Distance Meter..
  • Magnet strip & Stand. Use it as a guide for measuring distances with a laser distance meter in situations where there is no reflective surface. Use the built-in stand or magnetic strip feature to position it. Scale displays both inches and centimeters..
Check Stock

Songhe HC-SR04 Ultrasonic Sensor Module Distance Measuring Sensor Module for Arduino UNO MEGA2560 Nano 5pcs

  • Operating Principle -- Ultrasonic hc-sr04 distance measuring transducer sensor, it consists of ultrasonic transmitter, receiver, and control circuit..
  • HC-SR04 ultrasonic sensor module -- Using IO trigger for at least 10us high level signal, when triggered it sends out a series of 40KHz ultrasonic....
  • Test Distance Formula -- The distance between the unit and the object is calculated by measuring the traveling time of sound and output it as the....
  • Package Include -- 5 X HC-SR04 Ultrasonic Sensors , 10 X Female-Male Dupont Cables , 10 X Female-Female Dupont Cables , 3 X HC-SR04 Mounting Bracket.
Check Stock

WOSPORTS Golf Rangefinder, 800 Yards Laser Rangefinder, High-Precision Flag Lock/Speed/Distance, Tournament Legal Rangefinder for Golfing,Target Shooting and Hunting,with Battery

  • 3 models rangefinder: This laser golf rangefinder for golfing and hunting has 3 Modes: Flag Lock/Distance/Speed(0-300km/h).Perfect for measuring golf flags..
  • 800 yards high accuracy golf rangefinder: This laser rangefinder can measurement 5 to 800 yards and 250 yards to a flag lock. Provides fast measurement( with +/- 1 yard )..
  • Fast focus: The H-111 golf range finder It provides the true measurement accurate.You'll be able to see the object you're measuring clearly and find its distance..
  • Human Design: Continuous scan. Ergonomic design. Inseparable battery cover with the distance rangefinder. Automatically shut down after 10 seconds of inactivity..
  • Tournament legal golf rangefinder: The rangefinder provides accurate yardage and flag-lock distance.It without slope compensated distance,let the tournament is legal.This is a gift choice for golf fans..
Check Stock

Digital Non-Contact Handheld Laser Photo Tachometer Motor speed Gauge Tester Rotational Record(60 Data)MAX/MIN/AVG ±0.02%+1 Accuracy Measuring Range:2.5-99999RPM distance:50~500mm with Reflective Tape

  • Tachometer is a high quality instrument to measure the revolutions per minute(RPM) with wide measuring range and high resolution.
  • High accuracy measurement, quick measuring time and long detecting distance up to 500mm(20 inch) with Laser..
  • Wide measuring range(2.5 to 99999 RPM) and high resolution..
  • Capable of measuring at a distance from 2-20in(50-500mm)..
  • Data hold function, data record and recall(60 readings)..
Check Stock