rachel_ABQ said:

It helps to say which part of this you are uncertain about.

Agreed, and the size of the effect matters as much as its existence. Something real and small gets treated here as though it were real and decisive.

jason_paloalto said:

Agreed on the target, with the caveat that reference weight and current weight are different numbers.

Thank you for spelling out the reasoning rather than just the conclusion. Sending this to two other people who asked me the same thing last week.

rachel_ABQ said:

It helps to say which part of this you are uncertain about.

This is where I part company with the consensus forming above. The objection nobody has made: this only works if the measurement is doing what we assume it is doing, and that assumption has not been tested here.

I would rather be corrected than agreed with, if it comes to it.

Adding the numbers, since they settle part of this. One habit that pays for itself: post the method alongside the number. A figure without its method cannot be checked, and an unchecked figure is how this community accumulates folklore.

Moderator note: a post naming a supplier has been edited. Discuss suppliers in the review sections, not here.