1/0
26 June 2008
Bradfield Road, West Lindfield NSW 2070
Cancellation
General Certificate of Approval No 1/0
Issued by the Chief Metrologist under Regulation 60
of the
National Measurement Regulations 1999
This is to certify that the approval for use for trade granted in respect of
Length Measures of 100 mm to 100 m
has been cancelled in respect of new instruments as from 1 September 2008.
General Certificate of Approval No 1/0/A issued 1 October 2003 for Length
Measures of 100 mm to 100 m is still valid for new instruments.
Signed by a person authorised by the Chief Metrologist
to exercise his powers under Regulation 60 of the
National Measurement Regulations 1999.
NATIONAL
NAmtuL
STANDARDS
ht~AW?Etd~tdT (PATTERNS
COMMISSION
OF I~~~TRUME~~T~) REGULATIONS
REGULATION9
GENERAL CERTIFICATE
This
OF APPROVAL No l/O
is to certify that on approval has been granted
Length
Measures
of
is suitable for
use
100
for
mn to
of
the
pattern
of
m
trade.
This approval is subject
Certificate
100
that
to
review
on or
after
8/10/W.
Approval No 1/1 &ted 23/8/72 was cancelled as from 0/10/84.
Signed
Acting
Executive
Director
DescriptiveAdvice
approved 4/10/84
Pattern:
.
Length
measures
of
Technic01 Schedule No l/O
100
mm to
100 m.
describes
the
pattern.
Filing Advice
Certificate
of Approval
The
may be destroyed.
No l/l
dated
2310172
this
documentationfor
fs
superseded
of Approval No l/O dated 25/10/84
Technical Schedule No 1/O dated 25/10/04.
Certificate
by this
approval comprises:
Certificate
and
l/D
25/ 1 O/84
NATIONAL
STANDARDS
TECHNICAL
Length
Pattern,
Measures
1.
Descriptionof Pattern
1 .l
Nominal Values
of
100
mm to
measures shall be limited to the
Length
100,
The maximum
150,
200,
300,
length for
1.2
Construction
1.2.1
Material
500
100 m
following values:
mm and any
rigid measures
COMMISSION
SCHEDULE No l/O
whole
ntier
of
metres
up to
100
m.
shall be 2 m,
Rigid Measures
1.2.1.1
Rigid measures shall be made from materials of adequate
strength,
stability and
rigidity such ae stainless steel, nickel or chromium-platedsteel, brass, synthetic
materials such as 'nylon' or 'makrolon',and suitable hardwood such as Moracaibo
Boxwood.
Flexible Measures
1.2.1.2
Flexible tape measures
shall be made of carbon
steel, stainless steel, coated
steel, or etched steel. For topes up to 30 m in length, flexible tape measures may
be made of a suitable synthetic material of adequate strength
and stability.
1.2.2
Every
Finish
measure
of
Rigid measures
length shall be free from flaws.
shall be smooth and straight.
measures
not made of metal an exposed
and the tips shall be securely fastened.
For
The
and
end
surfaces
Measures
firm and
of
the
Measures
of
In
forming
perpendicularto the
measures
is necessary
end or
ends
shall be tipped with metal
two principal scale marks of end measures
longitudinalaxes of the measures.
length with hinged joints shall be constructed
measure
is straight when extended.
length
may be graduated on bath
so that the joints are
sides,
with sliding or calliper arms, such arms shall have
for
easy
shall be flat
no more
play
than
movement.
1.3
Design of Linear Scales
1.3.1
Scale Markings
scales on measures
of length shall comply with the
requirements of
National Standards
Cusnission Document 105, Design Rules for the Graduation of
Analogue Scales, in as far as it is applicableto linear measurement.
Gmduated
. . . ../2
l/O
25/10/04
Technical Schedule No l/O
Measures
of
SUB-DIVIDED.
The value of
where n is a
Pqe
length which are not
sub-divided shall be
the scale interval shall be in the farm
positive or negative whole number or zero.
More than one form
on a measure.
1,2
legibly stamped
or
5 x
10”
2
NOT
mm, cm or
m
graduated scale with different scale intervals may be marked
of
Scale marks may toke
forms
other
than
lines (e.g. holes, indentations etc.)
provided that the scale interval is equal to or greater than 1 cm and all marks are
denominated.
Only the
following unit symbols shall be used,
metre
centimetre
millimetre
mm
Marking
1.3.2
The
.-
m
cm
name
of
the
manufacturer
on a measure of length shall be in letters not
letters indicatingthe denomination,
marked
exceeding half the size of the
of length shall not bear o trade
or other
either the denominationor verificationmark,
Measures
1.3.3
mark
which could be mistaken for
VerificationMark
Provision shall be made for
a verificationmark to be applied.
Requirements
1.4
Performance
1.4.1
Maximum PermissibleErrors
Maximum permissibleerrors from zero to any scale mark shall bet
20.5 mm for lengths up to 500 mm1
.O mm for lengths over 500 mm but not over
+-0.05%for lengths over 2 m.
$1
1.4.2
Rules for
1.4.2.1
Temperature
Every
measure
of
the
2 ml and
Determinationof Errors
length
shall be correct at 20°C.
1.4.2.2Extensibility
Every
flexible tape measure shall be tested when subjected
to a tension (-'10%) of
20 N for synthetic materials and 50 N for metals, or as otherwise marked on the
While under test,
a length
measure must be supported
measure
by the manufacturer.
throughout its whole length on a level base or in such other manner as will enable
its length to be correctly determined.
NotesI
1.
The Cammissionls requirements for 1 m rigid length measures
those published in AS1508-1973,
Commercial Length Measures.
2.
Measures
marked
trade
use.
in both
imperial and metric
units are not
are
met
by
permitted for
1/o
21 /a/w
NATIONAL
STANDARDS
NOTIFICATION
GENERAL CERTIFICATE
COMMISSION
OF CHANGE
OF APPROVAL No l/O
CHANGE No 1
The following change
Length
Mensures
of
is
100
made to
mm to
100
the
approval
documentation
for
m.
In
Technical
Schedule
No l/O
doted
25/10/W+, clause 1 .l
amended to include length measures of 600 mm.
Signed
Executive
Director
Nominal
Values should
be