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Our Online Catalog - Blowout Sale! Save up to 56%


Blowout Sale! Up to 56% off on Our Online Catalog at Graph Barometer. Top brands include NoCry, Klein Tools, LIUMY, Digital Aid, BTMETER, Chromex Tools, bayite, K-II, Signstek, DROK, Innova, RISEPRO, TACKLIFE, Care Touch, Dr.meter, Philips Respironics, Extech, & VantaKool. Hurry! Limited time offers. Offers valid only while supplies last.


NoCry Digital Moisture Meter - Water Leak Detector and Thermometer for Wood & Building Materials, Battery and Replacement Electronic Probes Included
NoCry Digital Moisture Meter - Water Leak Detector and Thermometer for Wood & Building Materials, Battery and Replacement Electronic Probes Included
By NoCry
In Stock
$25.99
$18.99
You Save: 27%
4.2 out of 5 stars with 29 reviews
NoCry Moisture Meter tech specs Power supply: One 9V 006P, NEDA1604 or IEC6F22 battery (one battery included) Operating temperature: 32-122ºF Operating humidity: 0~85% RH Moisture measurement range: 1~70% MC for wood, 0.1~2.4% MC for building materials Moisture measurement accuracy: ±1% for wood with 0~30% MC, ±2% for wood with 30~60% MC, ±3% for wood with 60~70% MC, ±0.5% for building materials Temperature measurement range: -4ºF to 158ºF Temperature measurement


Carbon Monoxide Meter Klein Tools ET110
Carbon Monoxide Meter Klein Tools ET110
By Klein Tools
In Stock
$99.75
$93.96
You Save: 6%
4.2 out of 5 stars with 45 reviews
The ET110 is an easy-to-use meter that detects and measures concentration levels of carbon monoxide (ppm) and temperature (Fahrenheit/Celsius), making it the perfect choice for HVAC professionals. Features backlit LCD screen, warning indicator light, audible and visual alarms and multiple function buttons. Includes carrying pouch and 4xAAA batteries. Auto-power off after 20 minutes of no usage helps conserve battery life. Includes carrying pouch and 4xAAA batteries. Meter is NOT intended for


Electromagnetic Field Radiation Detector/EMF Meter, LIUMY Handheld Mini EMF Detector Digital LCD Radiation Meter/Sound and Light Alarm (Batteries Included)
Electromagnetic Field Radiation Detector/EMF Meter, LIUMY Handheld Mini EMF Detector Digital LCD Radiation Meter/Sound and Light Alarm (Batteries Included)
By LIUMY
In Stock
$59.98
$32.99
You Save: 45%
4.5 out of 5 stars with 32 reviews
LIUMY EMF Detector can test electric field radiation and magnetic field emission to reach the optimal test result. It's widely used to test and learn electromagnetic radiation situation indoor and outdoor:►Electromagnetic radiation monitoring: Household and appartment, office, outdoor and industrial site;► Electromagnetic radiation test: Mobile phone, computer, TV set, refrigerator and high voltage cable radiation test;► Radiation protection product test: Test effects of radition-proof


Digital Aid Professional TDS, EC & Temperature Meter. 3 in 1. Professional Quality TDS Meter:0-9990ppm. Accurate and Reliable Water Test Meter. Ideal for Drinking Water, Aquariums. With Leather Case.
Digital Aid Professional TDS, EC & Temperature Meter. 3 in 1. Professional Quality TDS Meter:0-9990ppm. Accurate and Reliable Water Test Meter. Ideal for Drinking Water, Aquariums. With Leather Case.
By Digital Aid
In Stock
$15.87
4.8 out of 5 stars with 35 reviews
Professional Quality Combination TDS Meter EC Meter and Temperature Meter The TDS EC Meter is a professional level meter that fits in your pocket! Ideal for all water quality testing, water purification applications, waste water regulation, aqua culture, hydroponics, laboratory and scientific testing, pools & spas, ecology testing, colloidal silver, water treatment and more. Features: * Large Backlit LCD Screen. * Lock function - makes it easy to read and record, press HOLD button then


Clamp Multimeter BT-570C-APP BTMETER Auto Range AC/DC Clamp meter 4000 Counts, Resistance, Cap, Hz, Duty Cycle, Temperature
Clamp Multimeter BT-570C-APP BTMETER Auto Range AC/DC Clamp meter 4000 Counts, Resistance, Cap, Hz, Duty Cycle, Temperature
By BTMETER
In Stock
$44.99
4.8 out of 5 stars with 119 reviews
The BTMETER BT-570C-APP Auto Ranging Digital Clamp Multimeteris the perfect DIY hand tool for troubleshoot electrical problems in a widearray ofindustrial and household devices such as electronic equipment, motorcontrols, domestic appliances, power supplies and wiring systems. It's compact, lightweight but durable and very easyto operate. It can measure AC/DC current, AC/DC voltage, resistance, continuity(buzzer), transistor anddiodes with a very high degree of accuracy . CATIV 600V / CATIII


Multimeter Hanging Kit with Clip and Magnetic Hanger, works with Fluke Meters
Multimeter Hanging Kit with Clip and Magnetic Hanger, works with Fluke Meters
By Chromex Tools
In Stock
$16.45
4.5 out of 5 stars with 208 reviews
The Chromex Tools Magnetic Multimeter Hanging Strap Kit is compatible with Fluke Meters. The Kit will allow you to hang your multi-meter using the strap and magnet included in the kit. Looking to hang your multi-meter on nails and hooks? This kit makes it possible!Kit Includes:StrapHanging magnetHanging clipChromex Tools Magnetic Multi Meter Loop Hanging Kit for Fluke Meters.. The magnet allows you to hang your multi-meter on any metallic surface, hooks, nails, bars, electrical boxes, allowing


bayite 3 Wire 0.36'' DC 0~30V Digital Voltmeter Gauge Tester Red LED Display Panel Mount Car Motorcycle Battery Monitor Volt Voltage Meter Pack of 5
bayite 3 Wire 0.36" DC 0~30V Digital Voltmeter Gauge Tester Red LED Display Panel Mount Car Motorcycle Battery Monitor Volt Voltage Meter Pack of 5
By bayite
In Stock
$25.00
$10.98
You Save: 56%
4.1 out of 5 stars with 10 reviews
Features: Cutting size: 23mm x 14mm/0.9'' x 0.55'', Thickness: 10mm/0.39'' Mounting Hole Center Distance: 28mm Measure Voltage: DC 0~30V Working Voltage: DC 3V-30V Measurement Accuracy: 1% (+ / - 2 digit) Display: Three 0.36'' digital LED Tube Display Color: Red Refresh Rate: about 500mS / times Operating Temperature: 14 ~ 149 °F(-10 ~ 65 °C) Reverse protection: Yes When measured voltage is below 10V: the voltmeter displays two decimal digits, for example, 5.32V When measured


K2 KII EMF Meter Deluxe BLACK-New & Improved Design
K2 KII EMF Meter Deluxe BLACK-New & Improved Design
By K-II
In Stock
$59.90
4.2 out of 5 stars with 198 reviews
Made in America! The K2 EMF meter is a sturdy, portable, easy to use, fast sampling Electromagnetic field meter that covers frequencies from 50-20,000 Hz at an accuracy of 5% at 50-60 Hz. The K2 meter is used regularly during spirit investigations and also for personal safety to identify potentially harmful high EMF radiation. The K2 meter is famous for its reliability and quality during paranormal investigations. This makes the K2 EMF meter a fantastic instrument for both ghost hunting and for


Signstek MESR-100 V2 Auto Ranging in Circuit ESR LCR meter Capacitor/Low Ohm Meter Up to 0.01 to 100R, Support in Circuit Testing
Signstek MESR-100 V2 Auto Ranging in Circuit ESR LCR meter Capacitor/Low Ohm Meter Up to 0.01 to 100R, Support in Circuit Testing
By Signstek
In Stock
$89.00
$61.99
You Save: 30%
4.5 out of 5 stars with 44 reviews
Using 100kHz to remove the impedance 1/(2*pi*F*C), the impedance will become small, and then we can measure the true series resistor value. A bad E-capacitor have larger ESR and create large ripple rather than filtering noise. Normally, a big capacitor is larger than 3 ohm. Therefore, we can measure the capacitor is bad, damaged or in good condition by using this theory. Because our ESR meter only applies less than 15mV DC or peak to peak on a good capacitor, as a result we can use it as in


bayite 3 Wire 0.36'' DC 0~30V Digital Voltmeter Gauge Tester Blue LED Display Panel Mount Car Motorcycle Battery Monitor Volt Voltage Meter with Reverse Polarity Protection Pack of 5
bayite 3 Wire 0.36" DC 0~30V Digital Voltmeter Gauge Tester Blue LED Display Panel Mount Car Motorcycle Battery Monitor Volt Voltage Meter with Reverse Polarity Protection Pack of 5
By bayite
In Stock
$25.00
$11.98
You Save: 52%
4.6 out of 5 stars with 27 reviews
Features: Cutting size: 23mm x 14mm/0.9'' x 0.55'', Thickness: 10mm/0.39'' Mounting Hole Center Distance: 28mm Measure Voltage: DC 0~30V Working Voltage: DC 3V-30V Measurement Accuracy: 1% (+ / - 2 digit) Display: Three 0.36'' digital LED Tube Display Color: Blue Refresh Rate: about 500mS / times Operating Temperature: 14 ~ 149 °F(-10 ~ 65 °C) Reverse protection: Yes When measured voltage is below 10V: the voltmeter displays two decimal digits, for example, 5.32V When measured


DROK Digital Multimeter DC 6.5-100V 20A Voltage Amperage Power Energy Meter DC Volt Amp Tester Gauge Monitor LCD Digital Display with Blue Backlight Measuring Volts Current with Built-in Shunt
DROK Digital Multimeter DC 6.5-100V 20A Voltage Amperage Power Energy Meter DC Volt Amp Tester Gauge Monitor LCD Digital Display with Blue Backlight Measuring Volts Current with Built-in Shunt
By DROK
In Stock
$13.79
4.3 out of 5 stars with 80 reviews
Parameters: Working Voltage: 6.5 ~ 100VDC Measuring Range: 6.5 ~ 100VDC Rated Power: 20A/2000W Measuring Accuracy: 1.0 grade Test range and display format: Power Range: 0~2kW within 1kW, display 0.0~999.9W; above 1kW, display 1000~2000W. Energy Range: 0~9999kWh within 10KWh, display 0~9999Wh; above 10kWh, display 10~9999kWh. Voltage Range: 6.5~100V(display 6.50~99.99V) Current Range: 0~20A(display 0.00~20.00A) Note: This module is suitable for indoor, please do not use outdoor.


Innova 3300 Hands-free Digital Multimeter (10 MegOhm)
Innova 3300 Hands-free Digital Multimeter (10 MegOhm)
By Innova
In Stock
$21.41
$10.85
You Save: 49%
4.1 out of 5 stars with 58 reviews
The INNOVA 3300 is a Hands-free Digital Multimeter designed to safely and accurately trouble shoot a variety of automotive and household electrical problems. This entry level multimeter features a 10 MegOhm circuitry to prevent damage to sensitive automotive electronics. It includes test lead holders for hands-free testing as well as easy to read instructions in English, French and Spanish.Your personal home and auto electrical tester - UL Certified Product. Designed to safely and accurately


RISEPRO Decibel Meter, Digital Sound Level Meter 30 – 130 dB Audio Noise Measure Device Dual Ranges HT-80A
RISEPRO Decibel Meter, Digital Sound Level Meter 30 – 130 dB Audio Noise Measure Device Dual Ranges HT-80A
By RISEPRO
In Stock
$22.90
4.1 out of 5 stars with 217 reviews
Brief Description: RISEPRO® decibel meter is a portable, easy to use and handy instrument for sound quality measuring, monitoring and controlling in office, home, school, traffic, audio system and construction site. The meter has wide range of applications such as noise pollution studies, research and other industrial use. Specifications: Sound Level: 30 ~ 130 dB LCD display: 1/2 Inch and 3 Digits Response Time : 0.5 second Resolution: 0.1 dB Accuracy: ±1.5 Db Data Hold, Max, Min and Auto


Multimeter,TACKLIFE DM03 Auto Ranging Multi Tester, Measures AC & DC Voltage and Current, Resistance, Continuity, Frequency, Diode Electronic Tester, Digital Multimeter with Backlit LCD
Multimeter,TACKLIFE DM03 Auto Ranging Multi Tester, Measures AC & DC Voltage and Current, Resistance, Continuity, Frequency, Diode Electronic Tester, Digital Multimeter with Backlit LCD
By TACKLIFE
In Stock
$24.97
$12.97
You Save: 48%
4.4 out of 5 stars with 58 reviews
LOW BATTERY INDICATION Tacklife digital multimeter has low battery indication funcation; and if the multimeter is idle for 15 minutes (idle time), the meter automatically turns off to save power▲MAGNUM MULTIMETER: Trms 2000 counts, auto-ranging multimeters of AC/DC voltage, current,inherent Frequency(Can't test the frequency of AC signal), resistance, doide digital tester.Pocket digital multimeter, measure at anytime and anywhere, no problem.. ▲BID FAREWELL TO POWER ISSUES: The digital


Care Touch Diabetes Testing Kit – Care Touch Blood Glucose Meter, 100 Blood Test Strips, 1 Lancing Device, 30 Gauge Lancets-100 Count and Carrying Case
Care Touch Diabetes Testing Kit – Care Touch Blood Glucose Meter, 100 Blood Test Strips, 1 Lancing Device, 30 Gauge Lancets-100 Count and Carrying Case
By Care Touch
In Stock
$29.99
4.2 out of 5 stars with 296 reviews
Care Touch Blood Glucose Testing KitTesting your blood sugar is essential to your present and future health. Care Touch wants to make it easy to keep track of your glucose levels with our high-tech monitor. Using our technology, you can stay up-to-date with your diabetes treatment and management. Always be aware of how your body is functioning on a day-to-day basis with a few simple steps. Keep track of your blood using the new, state-of-the-art Care Touch monitoring system, featuring: No


DROK 90538 Flat Plug AC 80-300V Voltage Panel Power Line Volt Test Monitor Gauge Meter AC 110V 220V Digital LCD Voltmeter
DROK 90538 Flat Plug AC 80-300V Voltage Panel Power Line Volt Test Monitor Gauge Meter AC 110V 220V Digital LCD Voltmeter
By DROK
In Stock
$14.06
4.8 out of 5 stars with 150 reviews
Descriptions: The module designed for measuring the ac voltage by connecting to the switch plug directly or the other kind of switch plug. It is suitable for measuring the AC voltage in many place, such as office, factory, laboratory, household and so on. You can use this item to monitor voltage of appliances; when this volt gauge show too high or too low voltage, you can choose to close your appliances or equipments so as to prolong life of your appliances. Parameters: Measuring


Wood Moisture Meter, Dr.Meter Lumber Water Moisture Tester, Digital Damp Detector with HD Digital LCD Dsiplay and 2 Spare Sensor Pins, for Measuring Firewood, Furniture, Floor, Trees(Battery Included)
Wood Moisture Meter, Dr.Meter Lumber Water Moisture Tester, Digital Damp Detector with HD Digital LCD Dsiplay and 2 Spare Sensor Pins, for Measuring Firewood, Furniture, Floor, Trees(Battery Included)
By Dr.meter
In Stock
$39.99
$21.99
You Save: 45%
4.2 out of 5 stars with 38 reviews
Dr.meter digital wood moisture meter MD-812 can easily detects hidden leaks in wood,plaster,carpet,sub-flooring. This hight accurancy moisture tester MD-812 may provide accurate moisture level readings ,which makes this wood moisture meter great for new home inspections, locating roof leaks or even selecting dry lumber at the yard. Used to check wood, drywall and concrete before painting, sealing or treating and locate and identify water leaks in roofs, floors and walls. Ideal to use in


Philips Respironics Personal Best Peak Flow Meter, HS755-001
Philips Respironics Personal Best Peak Flow Meter, HS755-001
By Philips Respironics
In Stock
$19.99
$15.00
You Save: 25%
4.9 out of 5 stars with 31 reviews
OFFER NOT VALID FOR STATE OR FEDERAL INSURANCE BENEFICIARIES | Philips Respironics Personal Best Peak Flow Meter enables users to accurately monitor their lung function. The 3-zone traffic light system makes understanding peak flow readings quick and simple and when used as part of an asthma action plan could help patients to manage their asthma. The color-coded indicators (located to the right of the scale) can be adjusted to delineate a patient's green, yellow, and red zones based on personal


Extech PH100 ExStik pH Waterproof Meter
Extech PH100 ExStik pH Waterproof Meter
By Extech
In Stock
$99.99
$71.99
You Save: 28%
4.3 out of 5 stars with 30 reviews
ExStik pH tester features a flat pH sensor making it ideal for testing semisolids and surfaces. Flat surface also reduces the chance of accidental breakage of the electrode tip-perfect for rugged field use! Built-in smart chip simplifies calibration and error diagnosis. CAL alert notifies you when it is time to recalibrate ensuring accurate readings. Renew indicator tells you when it is time to replace the electrode. Built-in memory recalls up to 15 sequentially tagged readings. LCD


VANTAKOOL Digital PH Meter, 0.01 PH High Accuracy Pocket Size PH Meter/PH Tester with 0-14.0 Measuring Range, Water Quality Tester for Household Drinking Water, Swimming Pools, Aquariums (Orange)
VANTAKOOL Digital PH Meter, 0.01 PH High Accuracy Pocket Size PH Meter/PH Tester with 0-14.0 Measuring Range, Water Quality Tester for Household Drinking Water, Swimming Pools, Aquariums (Orange)
By VantaKool
In Stock
$13.99
4.7 out of 5 stars with 13 reviews
VANTAKOOL Digital PH Meter, 0.01 PH High Accuracy Pocket Size PH Meter / PH Tester with 0-14.0 Measuring Range, Water Quality Tester for Household Drinking Water, Swimming Pools, Aquariums Specifications: ► Measuring range: 0.00-14.00 pH ► Resolution: 0.01 pH ► Accuracy: 0.01 pH ► Batteries: 2X 1.5V LR44 (included) ► Automatic temperature compensation: 0-50℃(32-122℉) ► Dimensions: 15x2.5x1.3cm/6x1.1x0.5 inch ► Net Weight: 52g/1.83 oz Features: ▲ High Quality and Durable





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