. /.WORLD TRADE
ORGANIZATIONG/TBT/N/MEX/51
1 April 2003
(03-1831)
Committee on Technical Barriers to Trade Original:  Spanish
NOTIFICATION
The following notification is being circulated in accordance with Article 10.6.
1. Member to Agreement notifying:   MEXICO
If applicable, name of local government involved (Articles 3.2 and 7.2):
2. Agency responsible:   Ministry of the Economy
Name and address (including telephone and fax numbers and E-mail and Web site
addresses, if available) of  agency or authority designated to handle comments
regarding the notification shall be indicated if different from above:   General
Directorate of Standard s/Ministry of the Economy (DGN/SE) Enquiry Point.
3. Notified under Article 2.9.2 [  X ], 2.10.1 [    ], 5.6.2 [   ], 5.7.1 [   ], other:
4. Products covered (HS or CCCN where applicable, otherwise national tariff heading.
ICS numbers may be provided in addition, where applicable):  Pressure gauges
(manometers) with elastic measuring elements
5. Title, number of pages and language(s) of the notified document:  Draft Mexican
Official Standard PROY-NOM-013-SCFI-2002, Measuring Instruments – Pressure Gauges
with Elastic Measuring Elements – Specifications  (10 pages, in Spanish).
6. Description of content:  This draft Mexican Official Standard (NOM) establishes the main
mandatory technical and metrological characteristics for pressure gauges, negative pressuregauges and positive-negative pressure gauges with elastic sensing elements and indirect
reading devices with a view to measuring the pressure and/or negative pressure of liquids,
vapours and gases.
This draft Standard specifies in particular  the legal metrological requirements for
instruments the mechanical measurement process of which transmits the elastic deformationof the sensing element directly to the dial, which has a pointer and a graduated scale in legalpressure units.
This draft Standard applies to instruments with a measuring range of 0.1 MPa to
1,000 MPa; indicating and recording pressure gauges, vacuum gauges and pressure-vacuumgauges
 are covered by Mexican Standard (voluntary) NMX-CH-3-1993-SCFI, set out
therein.
This draft Standard is in partial confor mity with International Guideline R-101-
1991, Indicating and recording pressure gauges, vacuum gauges and pressure-vacuum
gauges with elastic sensing elements (ordinary instruments), of the International
Organization of Legal Metrology (IOLM).G/TBT/N/MEX/51
Page 2
7. Objective and rationale, including the na ture of urgent problems where applicable:  
Establish metrological requirements for pressure gauges with elastic measuring
elements and provide more precise and reliable technical characteristics in order to prevent
deceptive practices and ensure measuring accuracy in commercial transactions.
8. Relevant documents:  Diario Oficial de la Federación  (Official Journal) of 18 March
2003.
9. Proposed date of adoption:
Proposed date of entry into force: }60 days after publication as a final MexicanOfficial Standard in the Official Journal.
10. Final date for comments:   17 May 2003
11. Texts available from:  National enquiry point [  X ] or address, telephone and fax
numbers and E-mail and Web site addresses, if available, of other body:
Web site:  www.economia.gob.mx/?P=85  (Standards catalogue)
E-mail:  cidgn@economia.gob.mx