Repeat Reading Gauge and Checking Surface Plate Calibration
Vložit
- čas přidán 31. 01. 2021
- Repeat Reading Gauge
and Checking Surface
Plate Calibration.
John Saunders: DIY Rahn Repeat-O-Meter Part 1: CAD Design:
• DIY Rahn Repeat-O-Mete...
Tom Lipton: Repeat O Meter:
• Repeat O Meter
Robin Renzeti: DYI Surface Plate Calibration:
• DIY SURFACE PLATE LAPP...
Support VintageMachinery.org on Patreon:
/ vintagemachinery
Make a one time donation to VintageMachinery via PayPal:
www.paypal.me/VintageMachinery
Please Visit: www.vintagemachinery.org
Sponsored by:
American Rotary Phase Converters
www.americanrotary.com/?sld=k...
Use checkout code "Vintage10" for a 10% discount on all AD, ADX and AI converters!
THANKYOU for getting down in the weeds. I'm one of these people that would want a full brake down of what ever topic is being covered. I know you barely scratched the surface of the topic but you explained the underlying theory really well, and I appreciate that. I did not know what an arc second was before this. I heard the term and seen measurements that used it, but never knew what it really was.
I have no intention of ever using this information but enjoy learning about things i never thought of before
I'll be using that for the first time on Monday. You're a great mentor. Thanks for the video.
Years ago i ground gears for helicopter transmissions , inspector checked our plate every monday morning . Aprox 16 by 18 inches in size , was unusual for plate to pass three mondays in a row. He used a repeat reading gauge of a slightly different design , same principle . Our use was very localized , so wear was fast .
At a mill where I did some work, there was a table made from cast iron leftover from ww2 which had been hand scraped back then when they made artillery shells during the war. When I got to see this 8’x10’ table it had been totally ruined by being used as a welding table.
The explanation of arc seconds was spectacularly useful. I got a really good qualitative sense of how small the increments are you are dealing with. Thanks for the trip to the weeds! Now I understand why guys doing this work step away from the plate to measure and wait for the heat from their hands to dissipate in the tools. Thanks for this exploration of some basic metrology.
In rifle shooting moa or min of angle is used which is roughly is 1 in. Actual is (1.047) At a 100 yards. This translates to 10 in. at a thousand yards. Quality sights either scope or irons are set with up to 1/8 min adjustments which will move the point of impact 1.25 in at a thousand yards.
I'm less than 100 miles north of Vermont Photonics and never knew they existed. They are located in a very fitting place, an area known as "Precision Valley", which used to be home to many machine tool manufacturers...GearShaper and Jones and Lamson among them.
Fascinating and impressive the level of degree of accuracy that is obtainable.
Just scratching the surface. Lol. Awsome video. Thankyou.
It is absolutely stunning how easily you have explained a so complicated concept. Really enjoyed it. Keep going Keith!!!
Where I used to work before retirement, we had an environmentally controlled surface plate room. All our surface measuring tools were calibrated on this MASSIVE granite surface plate. They also had an arm system that would check points on parts and give readouts to .0001". they had an intercom at the door and electronic locks to prevent you from screwing up a measurement. (Yes this was NASA)
Excellent video. Very informative, as so many of your videos are. Always look forward to your Monday and Friday postings.
Great info, do not apologize.
Great job Keith
Boy Keith, You've got a great site! I find everything you present interesting. I'm a retired millwright/maintenance supervisor and you've explained a lot of questions that I've had in the past! Thanks!
Best visualization of what an arc second looks like. Awesome!
This is a fascinating topic, thanks for spending some time on it
Keith, you are an excellent teacher. Thank you.
Excellent introductory presentation.