I did a 'reality check of my miclometers and calipers today. Having a 1" standard from a set of 6 chineese micrometers, I used this to compare the measurements.
After thorogh cleaning, these are the results:
Micrometers
1: A German 0-25mm Micrometer with a swastika and eagle wings read 25.40mm, Right on!
2: An old Starrett No. 436M 25-50mm Micrometer reads 25.41. This Micrometer is probably as good as the German one, but I will have to make a wrench to ajust it.
Calipers
1: 'Stainless Hardened' measures 25.36mm. This is the one I have been using the most because it never looses its zero and has the thumbwheel.
2: 'Machine-DRO' 6". measures 25.38mm. This is a lefthanded one for use in the lathe mostly.
3: 'Powerfix' 6" measures 25.40mm. This one feels very good and has a thumbwheel. It switches off in a very short time though.
4: ''Machine-DRO' 4". measures 25.41mm. It is only used sometimes in the mill for lack of room. 4" Calipers are very awkward to hold in my opinion.
The result of all this is that I am going to get a couple of iGaging ABSOLUTE ORIGIN 0-6" Calipers Link: http://www.amazon.com/iGaging-ABSOLUTE-Electronic-Fraction-Protection/dp/B00KDUD67G
The problem is I have to go to The United States to get them.
Well, it is my favorite country for vacations anyway, but it will have to be next year!
Kai
Some Pictures:
After thorogh cleaning, these are the results:
Micrometers
1: A German 0-25mm Micrometer with a swastika and eagle wings read 25.40mm, Right on!
2: An old Starrett No. 436M 25-50mm Micrometer reads 25.41. This Micrometer is probably as good as the German one, but I will have to make a wrench to ajust it.
Calipers
1: 'Stainless Hardened' measures 25.36mm. This is the one I have been using the most because it never looses its zero and has the thumbwheel.
2: 'Machine-DRO' 6". measures 25.38mm. This is a lefthanded one for use in the lathe mostly.
3: 'Powerfix' 6" measures 25.40mm. This one feels very good and has a thumbwheel. It switches off in a very short time though.
4: ''Machine-DRO' 4". measures 25.41mm. It is only used sometimes in the mill for lack of room. 4" Calipers are very awkward to hold in my opinion.
The result of all this is that I am going to get a couple of iGaging ABSOLUTE ORIGIN 0-6" Calipers Link: http://www.amazon.com/iGaging-ABSOLUTE-Electronic-Fraction-Protection/dp/B00KDUD67G
The problem is I have to go to The United States to get them.
Well, it is my favorite country for vacations anyway, but it will have to be next year!
Kai
Some Pictures: