I half expected a Gotteswinter comment on here saying "good enough" :)

Very nice work! ATB Robin

"You want to know true level, Morty?"

very interesting, love the blues brothers in the back ground

Great video and thanks for taking the time to share your procedure and results.

Thank you for taking your time filming and editing. I thoroughly enjoy all of your videos and look forward to each one :D

I really enjoy your videos Alex, thanks for spending the time to prepare them.

superb content! awesome drawings as always

Great video, well done! Scraping and precision the best mix

A really interesting and enjoyable combination of broad and deep technical information, with humor. And all without pants!

Neat video, thanks Alex! Interesting to see so much snow, when it's summertime here!

Great video, as always. Thanks!

Awesome video. Looks like a handy tool to have.

Impressively educational! Thankyou.

Thank you for sharing the progression of your work. It was very instructive. Charles

Thank you for passing along your knowledge. I admire your skill and the condition of your machines.

Very impressive stuff👍

Scraping pattern is excellent Alex. That clinometer a really nice tool for it's simplicity. Great Video as usual. Happy New Year from the US

Great stuff :-) Happy New year

Happy New Year! Envious of your snow!

Great video. Thanks for sharing your expertise.

Great video, as always ;) Greetings from Lower Austria

Nice project, enjoyed.

Very Interesting, thank you for filming, editing, narrating, Happy New Year 👍🎁😊

What an epic way to test an instrument. Great video. Good to see how you sharpened the scraper blade. Thank you!

Excellent engineering content, love it. On the practical side, and as a hobby machinist, I am curious as to how you machined that shoulder bolt hole with one side straight? Good to see you have winter in Austria, up here in Norway, supposedly the cold north, we have had continuous rain until end of December. Now we have a few mm of snow.

Happy New Year Alex. This was an excellent video, thank you for sharing it. I was almost wishing to see a target painted on the building that you were sighting. Stay safe and well :)

Great video, thank you.

Very interesting, thanks

Very interesting, thanks.

Very interesting video. Happy New Year from Croatia.

that is a very cool tool i must find one

very interesting project, now I'll go looking for a avimo clinometer, I did like the visual of first bluing of the cast iron/Durabar lathe facing showing hardness deflection. you remind me of my old machine/engineer that designed and built test station for 747 aircraft laser ring gryos.

Brilliant. Feliz año.

Just found myself one of these on ebay :-) ridiculously cheap for the stated accuracy thanks for the idea

2 - Key data points to picked up here - scraping is about a 2um process - ( I suppose one can think of 1um?) - compare to surface grinding that can also approach 2um in the right hands or a lapped gauge block that has to be about 100nm to wring properly. The other bit about feeling the high spots - is also an important point. Have you done anymore steel scraping? I consider the tooling, with what I would call 'heel-control' that you used on your video 'Hand scraping Carbon Steel" to be an absolute gem. Quite interested in what you achieved with it. Thanks for letting us look over your shoulder - quite a treat..

Servus Fifi, ein sehr interessantes Video. Beste Grüße, gutes neues Jahr und bleib gesund, Sepp

Alex, Thank you for mentioning that you can _feel_ the 2-micron high spots when finish scraping the flat with a sharp scraper blade. I don't recall _any_ other KZfaq provider mentioning this, perhaps because they tend to ignore hand-scraping and use their Biax power scrapers. Now, assuming that I obtain the ability to grind my scrapers as I learn to hand-scrape, I'll know to expect to _feel_ the high spots as I perform finish scraping. Can you recommend any "less inexpensive" way to grind scraper blades than having access to a D-Bit grinder? This is a fascinating video. I truly wish that I (as an ME) had been able to design precision devices and learn much more about Metrology before I retired. I did get a chance to sit in on the OEM training when our Tool Shop received its first Kern theodolite back in the '80s and learned a bit about the devide's capabilities. We tended to use our theodolites to build, measure, & "(re)calibrate" fixturing for aircraft repair.

As always great video with some usefull informations. I'm curious about that sudden change at 25 degrees. Since 5 teeth engage at the same time it could be caused for example by a tiny burr or spec on one tooth.

The purpose of the bubble might be to more easily permit obtaining a good-ish reading when the ground is rocking due to your colleagues' firing or incoming counter-battery fire. If the bubble's vibrating more or less around the middle, you're on target.

Great video. Watching the Blues Brothers?

Is it "The Blues Brothers" 1980 movie in the background? :) 9:00

Could you speculate as to whether the tooth pitch of the rack and the latch are equal? A deliberate mismatch may have been employed to ensure positive location. Plausible?

Would you mind sharing some details about the dust extraction on your D-Bit grinder? Is it homemade or stock? I have an import D-Bit grinder and I'm struggling to find a good concept for getting rid of the dust so any inspiration is appreciated :)

Alex, I know it has been two years, but, does a level's bubble change size due to atmosphere? is the bubble the same at sea level and at the top Mt Everest?

Yes this use artillery guns elevation

Is scraping more accurate than grinding?

If I was reading your chart correctly, it appears that it's much more (relatively) accurate at 0 and 45 degrees - with a higher error rate within the middle of the range. Did I read that correctly - and if so do you have any theories on why it is?

grau und gruen?

I have a USA gunners quadrant, it is accurate to .02 mils or .01 mils or 1 second

Oh. What a cruel way to treat a T-2.

13:43 I love that. Do you love me? 😍💋 💝💖❤️

I'm Single 😍😥