ISO 1020-1974 PDF

Full title and description

ISO 1020:1974 — Cinematography — Spools, daylight loading type for double-8 mm motion-picture cameras — Dimensions. This International Standard specifies the external dimensions and gauging details for daylight-loading spools intended for double-8 mm (Type R) motion‑picture film, including nominal capacities for common spool lengths.

Abstract

Defines dimensional requirements and gauging features for daylight-loading spools used with double-8 mm motion-picture cameras. The standard covers nominal spool capacities (7.5 m / 25 ft, 15 m / 50 ft and 30 m / 100 ft), flange and spindle geometry, and splined spindle-hole details to ensure mechanical interchangeability and safe daylight loading. It is a short (5-page) technical specification published in 1974 and later withdrawn.

General information

• Status: Withdrawn.
• Publication date: 1 July 1974 (Edition 1).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 37.060.20 — Motion picture films. Cartridges.
• Edition / version: Edition 1 (1974).
• Number of pages: 5.

Scope

Specifies the dimensions and gauging for daylight-loading spools for double-8 mm Type R motion-picture film in nominal capacities of 7.5 m (25 ft), 15 m (50 ft) and 30 m (100 ft). Excludes special-purpose spools (for example, certain high‑speed camera spools that require additional balancing). The intent is to ensure mechanical interchangeability of spools and safe daylight loading in compatible cameras and spindles.

Key topics and requirements

• Dimensional drawings and tolerances for spool flanges and hubs to ensure fit on standard 8 mm Type R spindles.
• Specification of nominal spool capacities: 7.5 m (25 ft), 15 m (50 ft), 30 m (100 ft).
• Gauging dimensions and methods for checking critical features (flange diameters, hub bore, splined spindle hole details).
• Notes on applicability: high‑speed camera spools may need additional balancing and are not necessarily covered.

Typical use and users

Used historically by film‑equipment manufacturers (spool and camera makers), film laboratories, archivists, restoration specialists and standards bodies to ensure mechanical compatibility of spools and safe daylight loading of double‑8 mm film. Collectors and museums that handle historic film formats may also reference the standard for preservation and reproduction work.

Related standards

Other cinematography standards published by ISO/TC 36 cover film perforation and dimensions, leaders and cue marks, and identification systems for film formats. National or regional equivalents and related documents (for example DIN 15822:1976 and other ISO cinematography standards) address overlapping topics such as film perforation and handling.

Keywords

cinematography; spool; daylight-loading spool; double-8 mm; 8 mm Type R; film spool dimensions; motion-picture film; ISO 1020; spool gauging.

FAQ

Q: What is this standard?

A: ISO 1020:1974 is an International Standard that specified the dimensional requirements for daylight-loading spools used with double-8 mm (Type R) motion-picture cameras. It provided drawings, tolerances and gauging information for nominal spool capacities.

Q: What does it cover?

A: It covers flange, hub and spindle-hole dimensions (including splined-hole details), gauging dimensions and nominal capacities (7.5 m / 25 ft; 15 m / 50 ft; 30 m / 100 ft). It does not aim to cover special-purpose high‑speed camera spools requiring additional balancing.

Q: Who typically uses it?

A: Camera and spool manufacturers, film laboratories, archivists, restoration experts, museums and standards bodies concerned with mechanical interchangeability and safe daylight loading of double‑8 mm film.

Q: Is it current or superseded?

A: ISO 1020:1974 has been withdrawn by ISO. Records indicate the standard was published on 1 July 1974 and was listed as withdrawn from sale (review/withdrawal activity noted in 2006); national catalogues also show withdrawal (for example, withdrawn from 17 May 2006 in some national records). There is no direct, single-numbered replacement listed by ISO.

Q: Is it part of a series?

A: It belongs to the body of ISO cinematography standards developed by ISO/TC 36 (cinematography). While not part of a numbered multipart series, it relates to other ISO cinematography standards that specify film perforation, leaders, identification and handling.

Q: What are the key keywords?

A: Cinematography, spool, daylight-loading, double-8 mm, Type R, film spool dimensions, gauging, ISO 1020.