Measurement database: measuring instruments

A convenient meter with a quality display, but unstable when measuring low resistances and some capacitors.

The author liked the scope: square waves look convincing up to 3 MHz, and it suits simple tasks.

Convenient clamp meter with good measurements in most modes, but relatively low current-measurement accuracy.

An inexpensive, fairly accurate multimeter, but its minimum inductance range is far too high.

The author likes it as a measuring instrument, praising its sorting mode while noting software issues.

A functional, convenient device for beginners, though more of an indicator; the oscilloscope works adequately up to 400–500 kHz.

The author likes its accuracy and functionality, while noting the lack of USB 3.0 and some limitations.

The clamp meter is within its stated accuracy, and its standalone logger and Bluetooth make it especially appealing.

The simple curvimeter works without internet, but underreads measurements on fabric.

The compact micrometer seemed reasonably accurate, though no precision standards were available for testing.

The author is pleased with the generator and considers its capabilities sufficient for most applications.

After replacing the diodes, the clock works and battery current fell from 25 to 1.2 µA.

The tester is accurate and feature-rich; the author especially liked its oscilloscope, recorder, and PD emulation.

Compact, surprisingly accurate clamp meter with good functionality, but no DC current measurement.

It works and measures a square wave accurately, but accuracy is below the stated level and it overheats in that mode.

The oscilloscope is suitable for testing power supplies, but saved screenshots cannot be transferred to another device.

The author completed the LCR meter with battery power and is pleased with the result.

The tester measures accurately and supports modern fast-charging protocols, but its case is flimsy and its software is simpler than the TC66's.

The leads and probes are convenient and low-resistance, but the modular tips are unreliable and awkward.

The author liked its accuracy and functionality and considers it better than familiar alternatives.

The tester measured accurately and left a positive impression, despite a caveat with reverse-current measurements.

Accurate voltage readings and an attractive VFD are offset by current-measurement error and mediocre build quality.

A handy tester measures current, voltage and capacity well, but its internal-resistance readings are unstable and use the wrong method.

A precise, well-built milliohm meter with a 100 V range, though YR1030 is sufficient for most users.

The meter has middling accuracy and noticeable drift after a heavy load, but the author found no better fit for the task.

Easy to calibrate and draws about 10–13 mA; the author recommends it for its low price.

The indicators work and are useful, but draw more current as voltage rises and have no power button.

Readings are inaccurate below 1 A and above 3.5 A; the author does not recommend it.

This inexpensive voltmeter is easy to calibrate, but its hundredths digits are only an illusion.

The rangefinder generally measures correctly, though the author notes a few quirks and reduced range in bright sunlight.

It measures voltage accurately, but setup is problematic and the author could not connect it to a computer.

The author liked its high accuracy and ease of use; it measures battery resistance, capacitor ESR, and very low resistance.

The pyrometer is functional and useful, but its thermocouple temperature range is limited to 537°C.

An accurate USB tester with external power, but no PD; the controls and software have drawbacks.

The tester is functional and accurate, but its single-button controls and remote-monitoring capabilities are disappointing.

The author liked its design, features and calibration, though it has measurement quirks, coarse current resolution and stiff buttons.

The author finds it an interesting, easy-to-use option for beginners, despite its limitations and quirks.

The author praises its assembly and accuracy; it is functional and likely outperforms the E7-22, though readings can be erratic at 7.8 kHz.

The first model measures current more accurately, but undercounts capacity by about 3%.

Capacity counting is correct, but current readings are highly inaccurate, especially at low currents.

The tester overstated the actual 2000 mAh capacity as 2499 mAh.

Useful for rough and comparative checks, but its current and capacity measurements are inaccurate.

It measures accurately and offers interesting features, but its specifications are modest and the display and controls are inconvenient.

A convenient two-axis inclinometer with good accuracy and a sturdy build; the author is generally pleased with it.

An accurate, well-built multimeter with useful Bluetooth, but weak protection and poor accuracy on some capacitance ranges.

The multimeter is accurate, well built and reliable, but has a large error when measuring small capacitances.

The compact meter showed acceptable accuracy, but current accuracy depends on how the load is connected.

An accurate, feature-rich, well-built multimeter, but testing revealed a problem with frequency measurement.

Accurate for voltage and current, but poor at measuring capacitance and limited in frequency range; the author considers it overpriced.

The author praises its accuracy, usability and PC connectivity, and says he would choose it over the other meter.

It works reliably and helps inspect heat, but the 60×60 resolution and image misalignment are disappointing.

An accurate, feature-rich multimeter, but it has accuracy issues in two ranges.

The compact multimeter was highly accurate, but its case is awkward and its highest capacitance range is inaccurate.

Inexpensive, well-made meters with low power consumption; they under-read by 0.07–0.1 V from 4 to 35 V.

After calibration, the meter showed fairly good accuracy, but its calibration and measurement results raise questions.

A good, easy-to-assemble kit; the author recommends it for beginners and notes the tester's good performance.

A good educational kit for building and learning about oscilloscopes, but not a full-fledged measuring instrument.

The ammeter is suitable for its class, and the author especially liked the ability to calibrate its readings.

Convenient True RMS clamp meter with good DC measurements, but it overreads capacitance and has an unresolved AC-current issue.

The author is pleased with the meter; tests went well, though centering the wire in the sensor improves accuracy.

An accurate, convenient supplementary meter for preliminary diagnostics and sorting SMD components.

A compact, handy oscilloscope with good value for money, but mediocre performance and awkward controls.

The compact thermometer was accurate enough for the author, but readings can depend on the surface material and color.

The tester is handy for locating breaks, but its accuracy is limited; this unit is an older version without a backlight.

The scale works and measures reasonably accurately, but its flimsy construction and readings depend on keeping it level.

The thermometer works and has convenient software, but significantly overreads the temperature.

A compact meter that is accurate for voltage and resistance, but cannot measure current and has flimsy probes.

The voltmeters proved more accurate than the previous ammeters and usable for measurements, but the seller sent the wrong color.

The display is clear and the build is neat, but both ammeters showed unsatisfactory accuracy.