I think I will just get 2 of these.
http://www.machinesales.com/machinery/coordinate-measuring-machines/0000104571
http://www.machinesales.com/machinery/coordinate-measuring-machines/0000104571
I'm thinking wooden yard stick and sharp wood pencil. Old school organic stuff...I think I will just get 2 of these.
http://www.machinesales.com/machinery/coordinate-measuring-machines/0000104571
Ball trammels , used with a good steel rule, that's how I learned eons ago. The ball centers the hole on one end the other use inside or outside leg. Once you know hole size , easy peasy. It works easy once you do it.
The trammels attach to the rule line the trammel to say the inch line , second trammel will attach close to the second hole . One will have a ball on the attached rod ,set it in hole one the other end will have an inside or outside leg to feel the other hole either side once you have that measurement add or subtract half the diameter of the hole size . That will give the distance between the holes . It can be very precise . Old timer taught me that back in 75Like many things, I'd not heard of ball trammels.
http://www.starrett.com/metrology/product-detail/59F
While I've only done a very preliminary search, and may yet find an answer.
Could someone please explain how a ball trammel is used?
Please.
Thank you,
Daryl
MN
Got my 13" Sorenson in the mail yesterday. Works great though I need a magnifying glass to read the vernier! ...
Hi Daryl,While the vernier doesn't read to .0001 the standard does.
I believe this might be helpful in reading light or heavy on the .001 vernier lines.
Do you find this to be an accurate statement?
Regardless, a fun inspection tool.
Daryl
MN