Skip Top Navigation
  • Who We Are

    • Leadership
    • Financials
    • Government Relations
    • Judicial Officer
    • Legal
    • Our History
    • Postal Facts
  • What We're Doing

    • Strategic Planning
    • Current Initiatives
    • Securing The Mail
    • Sustainability
    • Corporate Social Responsibility
    • Government Services
    • Postal Customer Council
    • Service Performance Results
  • Newsroom

    • National News
    • Local News
    • Testimony & Speeches
    • Broadcast Downloads
    • Events Calendar
    • Photo Gallery
    • Service Alerts
  • Careers

    • Career Opportunities
    • Working at USPS
    • How to Apply
    • Profile Login
  • Doing Business with Us

    • Suppliers
    • Licensing
    • Rights & Permissions
    • Auctions
    • Public Key Infrastructure
The image is the profile of an eagle's head adjoining the words United States Postal Service to form the corporate signature, along with the text About
Link to "11-4.3 Print Contrast Ratio" Link to contents for "11 Ink/Paper Information"      Link to "11-6 Intelligent Mail Barcodes, Delivery Point Barcodes, and FIM Measurements"

11-5 Address Block Measurements

ERM III is a portable desktop scanning device that interfaces to a laptop or desktop personal computer. It is capable of viewing the barcode and address block of letter-size and flat-size mailpieces.

The ERM III measures optical properties read by USPS automation equipment. It examines finished mailpieces bearing address information as well as the pre-production materials intended for subsequent use in mailpiece construction. Primarily, the ERM III measures the following:

  1. Envelope reflectance.
  2. Barcode quality analysis of intelligent mail barcodes or delivery point barcodes.
  3. Opacity.

The meter determines whether there is sufficient contrast between the printed character/barcode and the envelope background so that USPS automation equipment can successfully process the mailpiece.




Link to "11-4.3 Print Contrast Ratio" Link to contents for "11 Ink/Paper Information"      Link to "11-6 Intelligent Mail Barcodes, Delivery Point Barcodes, and FIM Measurements"
  • LEGAL

    • Privacy Policy ›
    • Terms of Use ›
    • FOIA ›
    • No FEAR Act EEO Data ›
  • ON ABOUT.USPS.COM

    • Newsroom ›
    • USPS Service Alerts ›
    • Forms & Publications ›
    • Careers ›
    • Site Index ›
  • ON USPS.COM

    • USPS.com Home ›
    • Buy Stamps & Shop ›
    • Print a Label with Postage ›
    • Customer Service ›
    • Delivering Solutions to the Last Mile ›
  • OTHER USPS SITES

    • Business Customer Gateway ›
    • Postal Inspectors ›
    • Inspector General ›
    • Postal Explorer ›
Copyright© 2025 USPS. All Rights Reserved.