I have bought digital scales plus a readout unit from Vevor and I'm quite happy with the kit so far.
The scales (Chinese of course) are affordable, come well packaged and arrived undamaged. The readout unit likewise. Plugged the leads from the scales into the readout, switched the readout on, and everything worked first time. Plug and play.
Have been busy trying to mount the scales onto a hobbyijst's drill/milling machine and that seems to work as well. A sensible set of screws, washers, and cable fasteners are included and I only had to drill and tap holes for the M4 scres to mount the scales. So far managed to install two out of three scales and they work.
The aluminium tubing that encloses the glass scales has slots on that take the mounting screws. The slot that takes the reading head is covered by a rubber lips that are pushed open by the reading head and close behind it to prevent dirt from entering.
It's possible to fine-adjust the position of the scales before you tighten the screws and fix the scales in place. The reading head comes with threaded holes for the mounting screws, so you want to fix the scales first and then mark, drill, and fix the reading head.
I haven't been able to verify the accuracy of the scales yet (I'm going to check it with a dial indicator when everything is installed), but I'm confident that it will be ok. I believe that the readout allows for calibration of the scale but I haven't tested it yet.
Recommended