Welcome to the ISWM

Advancing the science of weighing and measurement.

Welcome to the International Society of Weighing & Measurement the trade association for weighing and measurement professionals. The ISWM is committed to promoting and enhancing the professionalism and success of our industry. ISWM members include manufacturers and dealers/distributors of weighing and various measurement equipment, state weights and measures officials and industry end-users. From the finest precision balance to massive railroad and truck scales, from pressure to linear measurement and various process automation equipment, ISWM members supply products critical to global commerce. This equipment grouping helps all industries achieve the highest possible standards and efficiency.



Click here for information related to our 2022 ISWM Conference and Expo

Military and Students may now join the ISWM

Here is the link to Student and Military Member Applications.


2020 Handbook 44 Scale Code Available for Download. Note: No new version for 2021!*

Just log into the ISWM Members Only section and download the pdf.  If you need assistance with your log in, contact the ISWM staff at [email protected].  NIST announced in May that it does not plan to publish a 2021 edition of Handbook 44 and that the 2020 edition will be accepted for use until a new Handbook 44 is published.


Download the results of a recent ISWM member survey at the link below:

What is the Impact of Covid-19 on the Weighing Industry?


*Important Notice:  There will be no 2021 edition of Handbooks 44, 130, and 133 due to a delay in standards development resulting from the pandemic.  Therefore, those renewing membership will not receive handbooks.  New members will receive 2020 editions if requested.


Search ISWM W&M Dealer Listing by State

Search ISWM Manufacturer Listing

Thanks to all who participated in the 2020 member survey. We received a good number of suggestions and encouragement about our current path. We have our dealer business survey underway and will extend the deadline for that to be completed through December 18th. We of course are looking forward to the results of that survey as well. The Manufacturing Survey will be released during early December for our manufacturing members and non-member manufacturers who are relevant to our industry. See results at the links below!

Survey Comments      Survey Report            

Would your division like to have a meeting! If your Division would like to meet virtually the ISWM staff is quite happy to assist. Contact [email protected] or 507-848-7103 to schedule a Zoom Event for your division. Beginning February 1 the Dealer/Distributor Survey results will be available for discussion at these Zoom meetings.

Buying Commercial Scales Online - Things to Consider

Download the NCWM's guide to identifying red flags and avoiding some of the pitfalls of considering an internet purchase of a commercial scale. 

COVID-19 Relief

Did your business miss out on the PPP programs? There are still relief methods available. Check a current payroll tax relief program available at this link.