Two used data acquisition recorders from the United States: the $7,500 Axon Digidata 1550B with HumSilencer and the $635 DATAQ DI-500-16. The Axon targets low-noise recording; the DATAQ offers a far lower entry price.
Two air quality monitors for environmental indoor air measurement: the 16-in-1 with a 7-inch display and AQI alerts at $30.00, and the 9-in-1 with CO2/PM2.5/TVOC/HCHO detection at $38.80. Here's how they compare.
Compare the used Motorola MU140-70 deviation calibrator at $19.99 with the new AD584 resistance standard board at $13.72 to find the right calibration equipment standard for your bench.
The IOtech Personal Daq/56 is a lower-priced used recorder with a known classroom background and terminal blocks; the iWorx IX/228 costs more and comes from surplus with power-on-only status. Here's how to choose.
Mitutoyo's 500-197-30 and 500-193-30 are both Absolute Digimatic digital calipers, but one measures to 8 inches and the other to 12 inches. Here's which to choose for machine inspection work.
Choosing between a $240 wall-mounted ultrasonic flowmeter and a $17 turbine garden-hose meter comes down to pipe size, installation, and accuracy. Here's how to decide.
Two used Elikliv digital microscopes face off: a 4K 52MP model with HDMI/USB output at $119.98 and a 4.3-inch 720P model with adjustable LEDs at $189.98. Which fits your lab?
Deciding between a 2L rotary evaporator and a lab vacuum pump? This head-to-head compares their purposes, listed prices, and the use cases each one fits.
A 2-inch stainless steel turbine meter rated for 40-400 GPM at USD 320.00, or a compact digital turbine meter at USD 31.49? Here's how to choose based on your flow range, connections, and process needs.
The new 4.3-inch 1000X LCD scope at $69.99 keeps the buy-in low for coin inspection and soldering work, while the used Elikliv at $119.98 adds 4K video, a 10-inch stand, and a 64GB card for more demanding lab imaging.
Compare the used Mettler Toledo PM4600 DeltaRange with a 4100g capacity against the new SASVY 1000g/0.01g digital scale to decide which lab balance matches your workload.
Two listings for the same Mitutoyo 500-196-30 digital caliper are separated by just $1.72. The specs match, so the choice is really about title wording and price.
A used multi-format tester with BNC/PING support faces a new anti-interference line finder with POE checks and a color screen - both under $70.
A used $300 Acculab analytical balance with 0.1 mg readability faces a new $62.99 DentisLAB digital scale with 0.01g readability and higher capacity. Here's how to choose.
A $199 TinySA Ultra+ with RF generator faces a $4,111 Agilent N9010A listed as for parts. See which spectrum analyzer fits your bench.
Choosing between a 2L rotary evaporator and a 180W oilless vacuum pump comes down to whether you need solvent evaporation hardware or a standalone vacuum source. This head-to-head guide compares their listed prices and strengths.
The CHINO AH4000 (model AH4712) is a refurbished 24-channel hybrid strip chart recorder that records to paper and SD card, with Ethernet-ready monitoring and user-set Zero/Span. See if it fits your heat-treatment tracking needs.
The Hantek DSO2000 is a 2-channel digital oscilloscope with 1 GSa/s sampling, 8M memory depth, and a built-in 25 MHz waveform generator on the DSO2D10. Here's who it suits and the trade-offs to weigh at $199.97.
The 9-in-1 Air Quality Monitor puts CO2, PM2.5, TVOC, HCHO, and more onto a single LED digital display for USD 38.80. This guide covers who it suits and what to weigh before buying.
The Racebox Micro GPS Speed Meter & Telemetry Data Logger is a compact, developer-focused data acquisition recorder with high-precision GNSS logging and flexible Bluetooth connectivity. Here's who it suits and what to weigh before buying.
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