Update of standards for micrometers and actual status - November 2011

IMPORTANT UPDATE RELEASES

There have been recently updates in calibration standards, involving different types of length measuring instruments, such as:

1. micrometers

2. dial gauges

3. plain gauges (bth plug and ring gauges)

4. parallel thread gauges (bth plug and ring gauges)

5. verniers

6. taper thread gauges

7. spline gauges

It is important to update the calibration procedures used by calibration labs and metrology departments, if in-site calibration is performed.

Let's have a look here at the most relevant changes.

These BS standard have been reviewed.

previous standard BS 870:1950, new release is BS 870:2008

previous standard BS 6468:1984, new release is BS 6468:2008

previous standard BS 959:1950, new release is BS 959:2008

The BS update also refers to extensions according to following standards:

previous standard BS 870:1950, new release is BS 870:2008

previous standard BS 6468:1984, new release is BS 870:2008

previous standard BS 959:1950, new release is BS 959:2008

Following standards for extensions have been added, they were not previously included:

DIN 863-1:1999

DIN 863-2:1999

IS:2967-1983(1998)

DIN 863-2:1999

NF E 11-090 (December 1993)

NF E 11-097 (February 1998)

Actual release (November 2011) includes:

• Micrometers (any type), DIN 863 – 1999 (Part 1-4)

• External micrometers, British Standard BS 870-2008 (has been updated)

• Internal micrometers, British Standard BS 959-2008 (has been updated)

• Depth micrometers, British Standard BS 6468-2008 (has been updated)

• Micrometer heads, British Standard BS 1734 : 1951

• Micrometers (any type), Federal Specification (USA) GGG-C105 C–1987

• External micrometers, Australian Standard AS 2102

• Internal micrometers, Australian Standard AS 2101 : 1978