Choosing Between Two GOYOJO Roughness Testers
When dimensional metrology machine inspection sends you out to the floor with a roughness gauge, the basic job is the same: read Ra, Rz, Rq, and Rt accurately. Both GOYOJO contenders handle those four parameters, which means the real choice is between two different ideas of what a portable tester should be.
Quick Verdict
The $239.99 model is the stronger choice when your measurement routine is built around quick, mobile checks. The $275.99 model is the stronger choice when you want the spec sheet to emphasize high precision and fast processing.
At a Glance
| Feature | Handheld Surface Roughness Tester Digital Profilometer w/ Bluetooth Ra Rz Rq Rt | Surface Roughness Tester Portable Profilometer - Ra/Rq/Rz/Rt Profile Gauge Meter |
|---|---|---|
| Listed price | USD 239.99 | USD 275.99 |
| Measurement parameters | Ra, Rz, Rq, Rt | Ra, Rz, Rq, Rt |
| Standout capabilities | Bluetooth, pocket-size footprint | 0.01μm indication accuracy, high-speed DSP processor |
| Package extras | Calibration block, manual | Calibration block |
Where Each Product Wins
The handheld tester wins the portability contest. The portable tester wins the precision contest.
The tie-breaker is your workflow: if you want a low-profile gauge you can handle in one hand, the first model is the natural fit. If you want a stated accuracy marker and speed-driven processing, the other model takes the lead.
In practical terms, you are choosing between a tool that fits a grab-and-go workflow and one that puts a finer measurement resolution at the center of the pitch. Consider both before you settle on the next tester.
Product Notes
Handheld Surface Roughness Tester Digital Profilometer w/ Bluetooth Ra Rz Rq Rt
The reason this model stands out is wireless transfer in a truly portable body. It runs on a 3.7V lithium battery and is described as pocket-size, which makes sense for moving between measurement points. The Bluetooth link is the main differentiator here; it makes the tester feel like part of a digital workflow rather than a standalone meter. It also carries CE, FCC, and RoHS certifications. The limitation in this head-to-head is that its pitch is portability and connectivity, not sub-micron precision; the other GOYOJO tester is the one that puts a finer accuracy figure on the spec sheet.
Surface Roughness Tester Portable Profilometer - Ra/Rq/Rz/Rt Profile Gauge Meter
Here the pitch is measurement confidence on the spec sheet. GOYOJO specifies 0.01μm indication accuracy and a high-speed DSP processor to back it up, with one-button measurement to streamline the actual reading. The one-button operation is especially useful for repetitive checks because it shortens the transition from setup to reading. It still covers the same parameter set, so you do not give up measurement coverage. The limitation is practical: if wireless data transfer is a non-negotiable part of your process, the handheld Bluetooth model is the one to pick, since that capability is part of its headline feature set.
Final Choice by Use Case
Choose the Handheld Surface Roughness Tester Digital Profilometer w/ Bluetooth Ra Rz Rq Rt if your machine-inspection routine is built around quick, on-the-go readings. Choose the Surface Roughness Tester Portable Profilometer - Ra/Rq/Rz/Rt Profile Gauge Meter if your priority is a gauge whose specified accuracy and processor performance outrank mobility.
