HM Digital SM-1 In-Line Single TDS Monitor, 0-9990 ppm Range, +/- 2% Readout Accuracy

$14.15

HM Digital DM-2EC Commercial In-Line Dual EC Monitor, 0-9990 µS Range, +/- 2% Readout Accuracy

$23.02

HM Digital TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy

$11.99

HM Digital ZT-2 Basic TDS Tester, 0-999 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy, Black

$13.7

HM Digital TRM-1, 3X 1/4" Tee, Triple Inline TDS PPM Monitor/Meter

$195

Commercial In-Line Dual TDS Monitor

$135

HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy (2 pack)

$346.67

HM DIGITAL TDS Meters TDS-3 Handheld Temperature TDS ( PPM ) Tester, 0 - 9990 ppm, 1 ppm Resolution, +/- 2% Readout Accuracy Testing Water Quality For Hydroponics Aquariums Pools Drinking etc

$93.5

HM Digital Triple Inline RO/DI TDS Monitor with 1/4 inch T-Fittings

$52.9

HM Digital TDS-EZ TDS Meter Handheld PPM Tester

$199.73

HM Digital 1000ppm TDS Calibration Solution

$32.99

Ham DMR Monitor

$2.99

Peavey PV 12M 2-Way Floor Monitor

$619.99

APEC TDS Meter Digital Water Quality TDS Test Kit Meter with Carrying Case, 0 to 1999 ppm Measurement Range, 1 ppm Resolution, 2% Readout Accuracy

$11.99

Samson SARSXM10A 800W 10-Inch 2-Way Active Stage Monitor

$369.99

Samson SARSXM12A 800W 12-Inch 2-Way Active Stage Monitor

$127.46

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

TDS Meter Digital Water Quality Tester for RO-RODI System Drinking Water,Aquariums, Hydroponics,0-9990 ppm Measuring Range,1 ppm Increments,2% Readout Accuracy（Green）

$40.02

iGaging 1-2" Digital Electronic Outside Micrometer w/Large LCD Display Inch/Metric

$68.6

HDS272 Oscilloscope 2 in 1 2CH Digital Handheld Oscilloscope Multiumeter 3.5" LCD 70MHz Bandwidth 20000 Counts Multiumeter OSC+DMM+for Automobile Maintenance,Power Detection

$349

MNM Scales Digital Readout/Indicator LP7515 Replacement for OP-902

$64.95

4 in 1 Digital pH Meter for Water, ±0.01 Resolution High Accuracy Tds Meter Digital Water Tester with ATC pH Tester, Water Tester for Drinking Water, Brewing, Hydroponics, Wine, Pool and Aquarium

$189.28

HDS242S Oscilloscope 2+1CH Digital Handheld Oscilloscope Multiumeter 40MHz Bandwidth with 3.5 Inch LCD

$66.99

HM Digital COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, 2% Readout Accuracy

$23.02

Digital Readout Linear 0-150mm/0-6inch Accurate Digital LCD Digital Readout Lathe Linear Scale for Milling Machines, Linear Digital Readout

$29.99

DMS-20PC-1-LM-F-C, Self-Powered 3 Digit Led Display AC Line Voltage Monitors

$9.99

HM Digital C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume, Transparent/Blue

$12.99

Digital Decibel Meter - Portable SPL Meter with Backlit LCD Display (35-130dB(A) Range) - MAX/MIN Data Hold - Digital dB Reader Meter for Home, Classroom, Workshop, and Office Use

$22.98

Tds Meter Digital Water Tester - Affordable & Reliable Water Testing Kits for Drinking Water - 0-9990ppm - 1s Get Accurate Reasult for Home, Well, Tap Water Quality Test and More!

$379

Hantek DSO2C10 Digital Storage Oscilloscope 100MHz Bandwidth 2CH Dual Channel 1GSa/s 8M Memory Depth

$165

HANMATEK 110mhz Bandwidth DOS1102 Digital Oscilloscope with 2 Channels and Screen 7 inch / 18 cm, TFT-LCD Display, Portable Professional Oscilloscope Kit with 500 MS/s *2 Sampling Rate

$19.99

Milwaukee MW11 Total Cholrine Mini-Colorimeter, 0.00 - 3.50 ppm, 0.01 ppm Resolution, LCD Display

$265

iGaging 0-3" Digital Electronic Outside Micrometer Set 0-1", 1-2", 2-3" Large LCD

$28.97

Hantek DSO2D15 Digital Storage Oscilloscope 150MHz 1GSa/s 8M,2 Channel,2CH+1CH with Signal Source

$23.95

iGaging 0-1" Digital Electronic Micrometer w/Large Display Inch/Metric

$96.95

iGaging 4 pc 0-1", 1-2", 2-3", 3-4" (0-4") Digital Electronic Outside Micrometer w/Large LCD Display Inch/Metric

$144.95

Taidacent Blue Color High Precision 5 Digit Amp Meter DC 0.0000-3.0000A Ammeter Digital Display DC Digital Ammeter Resolution 0.1mA

$11.17

High Resolution Frequency Counter Digital Display High Precision Frequency Meter 10HZ-2.7GHZ TFC2700L

$10.99

Mitutoyo 293-340-30 Digital Micrometer, Inch/Metric, Ratchet Stop, 0-1" (0-25.4mm) Range, 0.00005" (0.001mm) Resolution, +/-0.00005" Accuracy, Meets IP65 Specifications

$50.08

Electronic Specialties 530 DVA Multimeter

$38.99

Hantek DSO2D15 Digital Storage Lab Oscilloscopes150MHz Bandwidth 2CH Dual Channel 1GSa/s 8M Memory Depth with 1CH Waveform Generator

$475.59

Electro-Voice PXM-12MP 12" Powered Coaxial Monitor (Pair)

$192.99

Digital pH and TDS Meter Kit - 0.01pH High Accuracy Pen Type pH Meter ± 2% Readout Accuracy - 3-in-1 TDS EC Temperature Meter for Hydroponics, Household Drinking, and Aquarium (pH Meter Kit)

$89.54

iGaging 0-4" Digital Electronic Outside Micrometer Set 0-1", 1-2", 2-3", 3-4" Large LCD

$59.99

TDS Meter Digital Water Tester - ppm Meter, EC & Temperature Test Pen 3-in-1 | Easy to Use Water Quality Tester | Ideal for Testing RO Drinking Water Hydroponics Aquarium Swimming Pool & More (Green)

$42.15

PmoYoKo Digital pH/TDS Meter with ATC pH Tester, 3 in 1 pH TDS Temp 0.01 Resolution High Accuracy pH Tester with LCD Backlit, TDS Meter pH Meter for Water, Wine, Pool, Hydroponics and Aquariums

$6.99

Mini Handheld Digital Oscilloscope, Support Persistence, PWM, 14 Type Measurement, 40MSa/s Sampling Rate, 18MHz Bandwidth, Signal Generator Frequency 500Khz, 2.4” LCD Display

$165.99

PmoYoKo Digital pH/TDS Meter with ATC pH Tester, 3 in 1 0.01 Resolution High Accuracy pH Pen Tester for Water with LCD Backlit, Tds Meter pH Meter for Drinking Water, Wine, Pool and Aquariums

$10.99

VTech DM1211 DM1211 Digital Audio Baby Monitor with Enhanced Range (1 Parent Unit) White

$24.99

iPstyle Digital TDS Meter Water Tester, PPM Water Quality Tester Measuring Range 0-9999ppm, Ideal for Drinking Water, Swimming Pool, Aquariums, Hydroponics (Grey) (TDS)

$42.69

Professional Upgraded DDS Signal Generator Counter, Seesii 60MHz LCD Display High Precision 200MSa/s Dual-Channel Arbitray Waveform Function Generator Frequency Meter

$168.99

VTech DM1211-2 DM1211 Digital Audio Baby Monitor with Enhanced Range (2 Parent Units), Silver, 3 Piece Set

$9.85

Digital Oscilloscope with 2 Channels 120Mhz Bandwidth Signal Generator 500MSa/s Sampling Rate, 2.8" LCD Backlight Display, Waveforms Storage, 3 Scan Modes, XY/YT/Roll, FFT Spectrum, Single Trigger

$165

Digital Manometer HT-1890 Dual Port LCD Display Backlight Air Pressure Meter Differential Gauge Gas Pressure Tester with Storage Case 10Psi Max. Pressure

$34.99

Rigol DS1202Z-E Digital Oscilloscope 200Mhz Bandwidth,2 Channels,1GSa/s Sampling Rate,24Mpts Memory Depth

$89.87

UEi Test Instruments EM152 Dual Differential Digital Manometer

$20.49

DY4100 Resistance Tester Earth Ground Resistance Tester Megohmmeter Measuring Meter Digital LCD Screen Display with Bag(DY4100 Digital Display)

$6.18

HANMATEK Handheld Digital Oscilloscope 50Mhz Bandwidth with 2 Channels HO52 3.5"TFT Mini Oscilloscope, 2 in 1 Oscilloscope and Multimeter, Backlit Screen, Auto-Calibration Function, Memory Function

$24.99

HiLetgo 2pcs 0.28" Digital Voltmeter Ammeter DC 100V 10A Amp Voltage Current Meter Tester 0.28 Inch 3 Bits Blue + Red Dual LED Display Panel with Connect Wires

$12.99

Extech 380560 High Resolution Precision Milliohm Meter,Gray

$124.78