The goldfish and a spire reach exactly 50% of rebuild remaining with 3 spanner hits.

If you are using visual tests you are doing it wrong. it is not exactly 50%, it can never be exactly 50% because of laws of mathematics.

I think your numbers are a bit wrong. By 2 or 1.

I have double and triple tested all of the above values and found them correct*

The goldfish and a spire reach exactly 50% of rebuild remaining with 3 spanner hits. that is 15 rebuild. Add another 50% witch is 15, accumilating to 30.

I tried 4 spanner hits, then 2 wrenches which is 28. Then it fit just enough for a mallet.

You have tested and seen that with 30, the armor is rebuilt, but with 28 it is not. You have not accounted for the possibility of the armor being 29 rebuild power and not 30.

So i tried 4 spanners, and then 4 mallet, then the exact same spot remaining for another mallet before rebuild.

You cannot visually test things. it will just never work out. calculate it.

14 mallet swings reaches the exact same ammount of rebuild remaining for a final mallet

Yes. because 14*2=28 and 5*4( 20 ) +4*2( 8 )=28 ... but yet again you did not account for 29.

same with heavy engine, why is it 59? Just tested and it showed.

Same reasons as I showed above, test it properly.

And heavy gun, why 71? it took me 13 spanner, 1 wrench , 1 mallet to be precise.

13*5=65 | 4+2=6 ----> 65+6=71 ( ? )

And light gun 44, why not 45?! Would be a buff to the spanner if the numbers were more precise.

Again, test it properly. I don't question Muse's decisions, I just calculate.

The galleon was a hard read, either its 50 or 49.

Again, please, don't visualize it, calculate it.

Wow so if the numbers would go 1 or 2 up or down to precise numbers then the spanner would get a buff.

Baloon should be at 45, light gun 45, heavy gun 70 and heavy engine 60.

For some components it gives the spanner the ability to be 1 whack faster, while the others the wrench a slower choice. Srsly why isnt this a thing?

Again, I do not question Muse's decisions I calculate.

A lot of answers for a lot of questions, pardon me.

**Note:*******I do not think rebuild power HP of components are necessarily integers, or rebuild power of tool are necessarily integers or another possibility is that the little red circle display is wrong - because you clearly see at some cases it not exactly a half or a quarter or the display.

Again, I cannot confirm this in any way, shape or form with the current data and only a developer with data access could confirm this. But the values I have measured are, I believe, the most accurate we can get for the moment.