BAOSHISHAN Digital Force Gauge 500N Push Pull Gauge 500N/110LB/50Kg/1800Oz Force Meter with 4 Units Portable Storage Case Backlit LCD Auto Power-Off for School Teaching Mechanics Experiments

I honestly expected this to feel very cheap, like a knockoff. But it feels exactly like all the very expensive specialty tools I used in engineering college. Works great, the case is nice, I have no issues!

Made a quick and dirty gauge for work and 3D printed & tapped an attachment for the gauge. It is built well, easy to use, accurate and functions as expected. Great value for a check gauge!

At $90 this appears to be very good value for money. Tried it on a few things: -Measuring the force needed to move the bed of my 3D printer (measuring resistance of motion over the smooth rods), -Deflection of belt or strings as indication of tension. Not sure how precise this is, but by violin with octave strings requires higher force to deflect the string than for regular strings. -Force needed to open a filing cabinet drawer, etc... We got repeatable results, within half a Newton or better, just freehand without any jigs. In one case within +/-0.1N on pretty small forces around 4.5N (a pound of force). Weighing my 2kg reference weight in a 10g bag (hanging), we got 2.02kg, which is well within the 1% accuracy margin. The tool seems to do the essentials right. The case is nice. There's a couple tips for pushing (I used two for different applications) and a hook for pulling. It could use a bit of polish in a few details: I was fumbling installing batteries and realize there's a little ridge not quite in the right place that catches the battery when instead it should guide it to the right height. Not a big deal but preventable. It beeps loudly on most button presses (except when powering on for some reason). That gets a bit annoying when zero-ing and taking repeat measurements. The settings menu felt a bit awkward/confusing. There's a mixed bag in there, from things like alarms that you'd change frequently to stuff you're rather less likely to touch, like the gravity constant. Alarm setting is apparently doable only in Newton, and it then forgets what unit you had set it for. It also doesn't remember the unit you last used when turning it on. There's no feature to reverse the screen (would be convenient for hanging tests). The buttons are nicely stiff, but sometimes we had to press the off button more than once for it to take effect. The instructions assume familiarity with this sort of equipment, but I could use more details about the "minimum force shielding function" and exactly how the first peak mode works, etc. There's some sort of "calibration certificate" but it doesn't seem to say from whom: looks more like a stamp on a calibration test. This seems to do the basics right at a bargain price. Seems reliable enough.

Good product—works as expected and meets my expectations. Good value for the money.

Most of this gauge's use has been for testing strength on certain 3d printed parts and a handful of magnets - for that purpose it's worked well, with relatively consistent results even at lower forces. Larger forces don't seem to be an issue from messing around with it either, but I have nothing for an exact comparison other than to say that a peak of certain pound ratings feel right. The various attachments are helpful and screw on easily. The main unit can be attached to a table or other surface if absolute accuracy is essential. Its only real flaw is how clunky changing any of the settings can be. It also forgets the units you selected, so unless you always want Newtons you'll have to cycle through them each time you turn it on.