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UDC 778.553.4 : 771.531.352
IS0
INTERN AT1 ON A L ORGAN I Z AT I O N FOR STAND A RD IZATl O N
IS0 RECOMMEN DATION
J93s
R 892
DIMENSIONS OF PROJECTION REELS
8 mrn MOTION-PICTURE FILM
FOR
(OTHER THAN TYPE S)
1st EDITION
December 1968
COPYRIGHT RESERVED
The copyright of IS0 Recommendations and IS0 Standards
belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized therefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the only valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and RusSian. Copies to be obtained through the national standards organizations.
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BRIEF HISTORY
The IS0 Recommendation R 892, Dimensions of projection reels for 8 mm motion-picture film (other than
Type S), was drawn up by Technical Committee ISO/TC 36, Cinematography, the Secretariat of which is held by
the American National Standards Institute (ANSI).
Detailed work on this question by the Technical Committee led, in 1965, to the adoption of a Draft IS0
Recommendation.
in November 1966, this Draft IS0 Recommendation (No. 1047) was circulated to all the IS0 Member Bodies
for enquiry. It was approved, subject to a few modifications of an dditorial nature, by the followmg Member Bodies :
Belgium Greece Romania
Hungary Sweden
Brazil
Bulgaria Israel Switzerland
Canada United Kingdom
IMY
Chile Japan U.A.R.
Czechoslovakia Korea, Rep. of U.S.A.
Netherlands
France
:
One Member Body opposed the approval of the Draft
The Draft IS0 Recommendation was then submitted by correspondence to the IS0 Council, which decided,
in December 1968, to accept it as an IS0 RECOMMENDATION.
J
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IS0 Recommendation R 892 December 1968
DIMENSIONS OF PROJECTION REELS
FOR 8 mm MOTION-PICTURE FILM
(OTHER THAN TYPE S)
1. SCOPE
This IS0 Recommendation specifies the recommended sizes and dimensions of projection reels for 8 mm motion-
picture film (other than type s).
2. DIMENSIONS
Enlarged view
of spindle hole area
FIGURE - Rojection reel for 8 mm motion-picture film
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ISO/R 892-1%8 (E)
TABLE 1 - Sizedependent dimensions of 8 mm motion-picture projection reels
~
Nominai
Reel Capacity*
Dimension millimetres inches
I
metres
I
M 175' -1
32.5 f 0.5 1.28 f 0.02
L ** 0.9 max. 0.035 max.
O
3'94 - 0.04 I
45.5 f 0.5 1.79 f 0.02
L** 1.1 max. 0.04 max.
O
M
128 -1
"O4 - 0.04 OI
E 45.5 f 0.5 1.79 f0.02
L ** 1.5 max. 0.06 max.
O
M 159 6.26
-I - 0.04
E 60.5 f 0.5 2.38 f 0.02
I
L** 1.5 ma. 0.06 ma.
M I 180 -3
7.09 - OI 0.12
E 60.5 f 0.5 2.38 f 0.02
L** 2.0 max. 0.08 max.
TABLE 2 -- Dimensions common to ail sizes of 8 mm motionpicture projection reels
Dimension millimetres inches
+ 0.3 + 0.01
B 1.6 0.06
C 8.05' :'lo 0.317' :.Oo4
D***
15.5 + 0-0
0.61 + :'O4
+ 1.0 + 0.04
H 8.5 0.33
O
JI (see Notes 3 and 4,
12s - 1.5
-00.06
page 5)
14.3 ma. 0.56 ma.
JZ
K 25.5 min 1 .O0 min.
The nominal reel capacities are based on a total film thickness (including any magnetic striping or winding allowance) in the
order of 0.165 to 0.175 mm (0.0065 to 0.0069 in). The nominal reel capacities for other film thicknesses can be calculated
by multiplying the nominal reel capacity by a factor. For example, the nominal reel capacities for a film thickness of 0.102 mm
(0.004 in nominal) is obtained by multiplying by a factor 1.5.
*+
See Note 5 and Figure.
***
There may be a little older equipment which requires a slightly larger D minimum value of 16.0 mm. However, the values shown
in Table 2 are compatible with recommendations for future construction of 8 mm projector spindles
...