339/2000 Sb.
DECREE
The Ministry of industry and trade
of 6 May 1999. September 2000,
laying down the requirements for material measures of length referred to brand
EEC
Change: 260/2003 Coll.
The Ministry of industry and trade shall determine in accordance with section 27 of Act No. 506/1990
Coll. on metrology, as amended by Act No. 121/2000 Coll. (hereinafter the "Act")
for the implementation of § 6 (1). 2 and § 9 para. 1 of the Act:
§ 1
This Decree lays down the requirements for material measures of length (hereinafter referred to as
"measure").
§ 2
Measures may be laid down by the official marks, instead of the description
special legal regulation ^ 1) marked by an EEC type-approval, and
the initial EEC verification, whose graphic design provides for a specific legal
prescription, ^ 2) only if they meet the requirements set out in the annex to this
the Decree, and that it was verified the procedures laid down in a special
legislation. ^ 2)
§ 3
This Decree shall take effect on the date of publication of the sectoral annex for
the measuring instrument to the Protocol to the Europe Agreement establishing an association between the
The Czech Republic on the one hand, and the European communities and their
Member States, of the other part, on conformity assessment and acceptance of
industrial products in the collection of international treaties, or on the date of entry
the Treaty of accession of the Czech Republic to the European Union entered into force,
If the day earlier.
Minister:
doc. Ing. Gregr, r.
XIII.
The requirements on the dipstick
1.
The DEFINITION of the
1.1 gauges, measuring instruments which are contain scale marks whose
distances are given in legal units of length.
1.2. the nominal length of the measure is the length, which is marked with the gauge.
1.3 the principal scale-marks are two brands that work
the distance represents the nominal length of the measure.
1.4 the scale length is made up of the scale marks and the other marks.
1.5. the measure of length is described as:
1.5.1 the end gauge, if the principal scale-marks are formed by
two surfaces;
1.5.2 If the principal scale-marks are formed by
two lines, commas, holes or marks; fall into this category
even the zone;
1.5.3 a composite measure when one of the principal scale-marks
is a surface and the other a line, hole or mark.
2.
MATERIALS
Of length and their supplementary appliances shall be made of materials,
which are, under normal conditions of use is sufficiently durable, stable and
resistant to environmental influences.
The quality of the materials used must be such that:
and for normal use) at temperatures up to 8 ° C above or below the
the reference temperature changes in length were greater than the maximum permissible
errors
(b)) for the measures, which must be used for the action of certain traction,
did not cause a drop or increase this force by 10% change of length more
than the maximum permissible error.
3.
CONSTRUCTION
3.1 Measures and their supplementary appliances shall be clearly and thoroughly
constructed and carefully worked.
3.2 a cross section of the measure must be of such dimensions and shape that, under
normal conditions of use allow for measurements to be made with the accuracy,
that is required for the class of accuracy to which the relevant measure belongs.
3.3. the Terminal surfaces of end measures shall be equal. These Terminal surfaces and
the lines must be perpendicular to the longitudinal axis of the measure.
3.4. the Terminal surfaces of end or composite measures made of wood or
another material whose durability is equal to or less than
the durability of wood, it must be made up of a band or tip which is resistant to
to wear and impact and that is adequately attached to the measure.
3.5 additional devices, such as. one or more fixed
movable hooks, rings, handles, plates, bolts, reeds,
-or noniů, which facilitate and extend the use of the measure, are
allowed under the condition that they cannot be a cause of confusion. This device
must be designed and attached to the measure in such a way that, under
normal conditions of use could not in practice increase the inaccuracy of measurement.
3.6 Zone must be made so that in the event that the seat on the band
a flat surface its edges are almost straight and parallel.
2.3 Retracting device zones must be manufactured in such a way as to
could not cause any permanent deformation of the tape.
4.
GRADUATION AND NUMBERING OF SCALES
4.1 measures shall carry across the nominal length clear, regular and
indelible marking and numbering of the scale so as to allow
a sure, simple and unambiguous reading. Some non-numbered tags
the scale, the number of which does not exceed the number of scale marks between two
consecutive numbered scale marks on the measure, may extend beyond the
the basic scale mark at the end of the measure.
4.2 Value must match the value of the scale interval 1 x, 2 x 10En 10En
or 5 x 10En metres, where the power of "n" is a positive or negative number
or zero.
This value must be at most equal to:
a) 1 cm if the nominal length of the measure less than or equal to 2 m,
(b)) 10 cm if the nominal length of the measure greater than 2 m and less than 10 m,
c) 20 cm if the nominal length or equal to 10 m and less than
50 m,
d) 50 cm if the nominal length is larger than or equal to 50 m.
However, these values may be exceeded for certain specific uses, which
When you are submitting an application for approval of a justified and which must be on the
the measure stated.
4.3 If the scale marks ticks, then it must be straight, perpendicular to the axis
the measure and must all have the same width, which is along the entire
the length constant. The length of these lines must be related to corresponding
a unit of measurement. Ticks must be such as to form a distinct and
to understand the scale and make their width does not cause any inaccuracy
measurement.
4.4 part of the scale, located near the ends of the gauge, can be further
divided into decimal parts of the scale values valid for the whole
the dipstick. In this case, the width of the lines may be in areas of sparse
scale intervals smaller than in the rest of the measure.
4.5 the scale-marks may also be formed by holes if the value
scale interval greater than or equal to one centimetre, or other
marks, if the value of the scale interval greater than or equal to one
decimetre, provided that these marks ensure a sufficiently precise
reading, taking into account the class of accuracy to which the measure belongs.
4.6. Numbering can be continuous or repetitive. in the case referred to in
section 4.4 may numbering in zones with lower values of the scale
differ from the numbering in the rest of the measure. Position, size, shape,
color and contrast numbers must be appropriate to the scale and brands
the scale to which they relate.
Regardless of the value of the scale interval, which is listed in section 4.2, you must
be the scale marks numbered in metres, decimetres, centimetres
or millimetres without indication of the corresponding symbol.
The number of numbered scale-marks shall be such that the reading was
unambiguous.
If the numbering unit is other than the metre scale-marks may be
the corresponding meter marked in meters. Behind the numbers for m then
the symbol m, must be reported.
In addition, the number of preceding metres may be repeated in the same
way before otherwise designated scale marks.
If the value of the scale interval corresponds to the value 2, and the length of the interval x 10En
not less than 2 centimeters, all tags must be numbered
the scale.
4.7 If the measure has more than one scale, the tick values may be
different scales, and the numbering may increase in the same or opposite direction.
5.
NOMINAL LENGTH
5.1. the nominal length of the measures of length must have one of the following
values: 0.5, 1, 1.5, 2, 3, 4, 5, 6, 7, 8, 9 m or a multiple of 5 m.
5.2 for special purposes, you can enable additional value, provided that the
the need to use a measure of such nominal length length at the time of
applications for type-approval is justified and that the specific use for which it is
measure reserved is indicated on the measuring dipstick.
5.3 Some of the nominal lengths in 5.1 are not allowed for the measures
referred to in paragraph 9.4.2.
6.
MARK
6.1 To 6.1.1 must bear the following markings:
6.1.1 the marking is mandatory in all cases:
a) nominal length,
b) manufacturer's identification mark or his trade name,
(c) identification of the accuracy class): I, II or III,
(d)) EEC type-approval mark.
6.1.2. the designation of compulsory in certain cases:
and, if the reference temperature) is different from 20 ° C,
(b) the tension force)
c) specific use for which it is reserved in the cases that are
listed in points 4.2 and 5.2.
6.2 nominal length, voltage, and temperature must be expressed in units of
measurement of permitted by Decree No xxx/2000 Coll., or in one of their
decimal multiples or parts, followed by the corresponding law
allowed tag.
6.3 All these markings shall be given visibly and legibly,
starting from the beginning of the measure.
In agreement with the Czech metrology Institute to an integral part of the measure
There may be some indication. In this case, must be in
EEC type-approval certificate provided for where these marks have
place.
If the width of the measure to allow the EEC type-approval mark has been
readable, this tag may be present, regardless of the provisions of section
3.1 Annex 1 of Decree No xxx/2000 Coll., and in accordance with point 3.5 of this
the annex, in the form of the following brands, referred to in the relevant
sequence:
-stylized letter epsilon,
-the distinctive letter (s) of the Member State which issued the certificate
EEC type-approval,
-the last two digits of the year of issue of EEC type-approval certificate,
-reference number of the EEC type-approval certificate.
6.4 the coefficient of linear thermal expansion of the material from which it is
the measure made, in the form: Alpha =......, can be displayed solely on the
responsibility of the manufacturer.
6.5. In addition, measures shall be borne by non-metrological information set out
by regulation or authorized Czech metrological Institute.
6.6 If the are encoded, must be expressed in the official language of the
the Member States, which are the measure specified.
6.7. Advertising inscriptions may appear on measures of length provided that the
their location complies with the provisions referred to in point 4.2.
6.8 the Inscriptions, including advertising inscriptions, shall be arranged in such a
in a way, that in no case affect the use of measures such as
the gauge. Mandatory labelling, with the exception of EEC type-approval marks, and
a place for placement of advertising inscriptions, shall be listed on a sample
is submitted for EEC type-approval.
7.
THE MAXIMUM PERMISSIBLE ERRORS
Measures defined in this regulation are in accordance with the accuracy of the classified into three
classes, designated I, II and III.
7.1 the maximum permissible positive or negative error,
the nominal length, or)
(b)) any other distance between any two consecutive
scale marks must be expressed in millimetres as a function of
the length in the form (a + bL), where:
-L is the length in question, rounded to the next higher whole number of
meters,
-a and b are coefficients fixed for each class of accuracy according to the
the following table:
+--------------------------------+----------+-------------+
| Accuracy class | a | b |
+--------------------------------+----------+-------------+
| I |0,1 |0,1 |
|II |0,3 |0,2 |
| III |0,6 |0,4 |
+--------------------------------+----------+-------------+
7.2.1 the maximum permissible positive or negative error in the length of the interval i
not exceeding 1 cm shall be fixed for each class of accuracy according to
the following table:
+------------------------------+--------------------------+
| Even the reference length scale | The maximum permissible error |
| | (in mm) for the class of accuracy |
+------------------------------+---+-------+--------------+
| | I | (II) | (III) |
| +---+-------+--------------+
| = 1 mm and < | 0.1 | 0.2 | 0.3 |
1 mm and | < < = 1 cm | 0.2 | 0.4 | 0.6 |
+------------------------------+---+-------+--------------+
In the case of intervals exceeding 1 cm, must be the maximum permissible
error is expressed as a function of the length of the interval by the formula (a + bL) mm, where
the values of parameters a and b are equal to the values given in point 7.1 and where L is
the length in question, rounded to the nearest whole higher number of meters.
7.2.2. The maximum permissible difference between the lengths i of two consecutive
tick marks whose length does not exceed 1 cm shall be fixed for each
class of accuracy according to the following table:
+-----------------------------+---------------------------+
| Even the reference length scale | The maximum permissible difference |
| | (in mm) for the class of accuracy |
+-----------------------------+-----+-----+---------------+
| | I | (II) | (III) |
| +-----+-----+---------------+
|i
