At the moment this particular scale is calibrated at .2 pound incrementsWhich brings up the difference between precision and accuracy. It may be reading in 0.2 lb increments, but it could be off by several pounds.
I recall reading that Rossi "calibrated" his scale by having someone who claimed to know their weight stand on the device.
That's nice and all, but not particularly reassuring that they were getting accuracy in the gram range, which is what Rossi was claiming.
I don't see that measurement as being particularly significant. Whether he add 50 grams or 100 grams doesn't really make any difference as far as I can see.
What's much more important is that Rossi has consistently refused to do a "null" test, where he didn't inject any hydrogen to demonstrate that his device behaves any differently when hydrogen is absent.
No doubt Rossi's fans will suggest that he may have done such testing in secret, but "Rossi said" is not evidence.
I agree. You’d think Rossi would have done this exact thing a hundred times in his lab: run the water through but without pressurizing the cores with hydrogen. One would expect any temperature measurements to be vastly different between the two scenarios...
...UNLESS it would show that the hydrogen does nothing at all.
Why did Rossi stop the radio-frequency stimulation of his reactors?
It's battery powered as well.
The device that WEIGHS will work perfectly every time since it is manufactured to do that.
The device that READS the current flow will also work perfectly every time for the same reason.
The computer processing chip will also do the same.
What you are "adjusting" on these kinds of sales is "the PROGRAM" that evaluates the information flow coming from the device reading the current.
You might also need to adjust the weigh platform ~ that is CENTER it ~ to improve performance.
In any case, the only reason it generates a report at each .2 pounds is the DISPLAY SPACE allocated for that purpose is only so big. You could go 320.1 pounds and read it from above. Unless it's a locked in LQD, or a series of LEDs (kind of an old fashioned way to do things) you might be able to drop a different program on the chip and report out a number in 6 pt type that would give you maybe 50 digits of precision?~?~ whatever you wanted.
This is NOT a mechanical scale and I have no idea where you'd find mechanical scales outside of OHAUS ~ you might want to take a look at this page to check out their currently available inventory. You'll notice immediately that the high precision devices have a COVER ~ to avoid weighing your own breath ~ but the devices targeting heavier weight materials do without it ~ but I assure you they can still have trouble with breath which is why the program on the chip stops counting after so many millions of iterations: >http://us.ohaus.com/us/en/home/products.aspx