ISO 24537:2007

Micrographics - Dimensions for reels used for 16 mm and 35 mm microfilm

ISO 24537:2007 covers the essential dimensions of lightweight reels, made of plastic or metal, used for the storage and retrieval of processed 16 mm and 35 mm microfilm that is used in manually threaded equipment. Reels intended for use in 16 mm automated retrieval systems are outside the scope of ISO 24537:2007. The dimensions of these reels are specified in ISO 7761. Camera spools are also frequently used for storing processed microfilm. The dimensions of these spools are outside the scope of ISO 24537:2007, but they are specified in ISO 6148.

Micrographies — Dimensions des bobines utilisées pour les microfilms de 16 mm et de 35 mm

General Information

• Status: Published
• Publication Date: 29-Mar-2007
• ICS: 37.080 - Document imaging applications
• Technical Committee: ISO/TC 171 - Document management applications
• Drafting Committee: ISO/TC 171 - Document management applications
• Current Stage: 9093 - International Standard confirmed
• Start Date: 04-Dec-2025
• Completion Date: 13-Dec-2025

Overview

ISO 24537:2007 is an international standard that specifies the essential dimensions for lightweight reels used in the storage and retrieval of processed 16 mm and 35 mm microfilm. These reels, made from plastic or metal, are designed for manually threaded microfilm equipment and ensure compatibility across various devices handling micrographics. The standard excludes reels intended for automated 16 mm retrieval systems, which are covered under ISO 7761, and camera spools, which fall under ISO 6148.

This standard plays a critical role in maintaining uniformity and physical interoperability in microfilm handling, thereby reducing equipment incompatibilities and safeguarding the delicate microfilm during storage and use.

Key Topics

• Reel Dimensions
  ISO 24537:2007 defines precise measurements for both 16 mm and 35 mm microfilm reels, including flange positions, spindle hole sizes, and location surfaces to ensure a consistent fit in manually threaded equipment.

• Spindle Hole Designs
  Multiple permissible spindle hole designs are detailed, allowing manufacturers flexibility while maintaining adherence to standardized dimensions for smooth equipment engagement.

• Lateral Runout (Wobble)
  The maximum acceptable lateral runout of reels is specified at 1.3 mm to prevent film damage and ensure reliable operation within microfilm readers.

• Flange Requirements
  Flanges may be either solid or spoked, but must be free from surface defects such as flashing or molding lines that could interfere with film transport.

• Optional Features
  The standard allows optional film loading slots in reels and flanges, provided they conform to specified dimensional criteria.

• Color Restrictions
  Reels can be of any color except black, preventing confusion with camera reels which use different standards and applications.

Applications

• Microfilm Storage
  Ensures reels used to store processed microfilm conform to physical dimensional standards, protecting film integrity and compatibility with reading equipment.

• Manual Microfilm Equipment
  Supports the operation of manually threaded microfilm readers by providing consistent reel specifications, which help maintain reliability and minimize equipment malfunctions.

• Archiving and Document Management
  Widely used in archival institutions, libraries, and government agencies for micrographic documentation management, facilitating standardized handling and retrieval processes.

• Manufacturing of Reels
  Guides manufacturers in producing compatible and standardized reels, aiding in mass production that meets international quality and compatibility requirements.

Related Standards

• ISO 7761 – Specifies dimensions and operational constraints for 16 mm reels used in automated retrieval systems, complementing the manual-reel focus of ISO 24537:2007.

• ISO 6148 – Defines dimensions for camera spools and cores frequently utilized for microfilm storage, covering reel types not included in ISO 24537.

• ISO 6196 – Provides vocabulary and terminology for micrographics technology, ensuring consistent language across ISO standards related to microfilm.

---

Adherence to ISO 24537:2007 safeguards physical compatibility and functional reliability in microfilm reel usage, making it essential for professionals involved in micrographics, archival management, microfilm equipment manufacturing, and document preservation. This standard enhances operational efficiency by standardizing critical reel dimensions, leading to longevity and safe handling of valuable microfilm records.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 24537
First edition
2007-04-01
Micrographics — Dimensions for reels
used for 16 mm and 35 mm microfilm
Micrographies — Dimensions des bobines utilisées pour les microfilms
de 16 mm et de 35 mm
Reference number
©
ISO 2007
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

©  ISO 2007
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2007 – All rights reserved

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 24537 was prepared by Technical Committee ISO/TC 171, Document management applications,
Subcommittee SC 2, Application issues.
Introduction
There is an increasing variety of equipment available to retrieve 16 mm and 35 mm roll microfilm. Some
equipment uses conventional threading from the supply reel to the take-up reel in order to drive the microfilm.
Other equipment uses automatic threading techniques with reels and an ISO approved cartridge.
This International Standard is intended to provide 16 mm and 35 mm reel dimensions which will allow
compatibility with readers using conventional threading, and which can also be used for microfilm storage. If a
16 mm reel is to be used in a cartridge for use in automatic threading equipment, the requirements of
ISO 7761 will apply. The requirements for camera spools are specified in ISO 6148.

iv © ISO 2007 – All rights reserved

INTERNATIONAL STANDARD ISO 24537:2007(E)

Micrographics — Dimensions for reels used for 16 mm and
35 mm microfilm
1 Scope
This International Standard covers the essential dimensions of lightweight reels, made of plastic or metal,
used for the storage and retrieval of processed 16 mm and 35 mm microfilm that is used in manually threaded
equipment.
Reels intended for use in 16 mm automated retrieval systems are outside the scope of this International
Standard. The dimensions of these reels are specified in ISO 7761.
Camera spools are also frequently used for storing processed microfilm. The dimensions of these spools are
outside the scope of this International Standard, but they are spec
...