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Journal of the Society of Motion Picture Engineers ( Volume: 41, Issue: 11, November 1943)
[ACTIVE]

Precision Recording Instrument for Measuring Film Width

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
The paper discusses a mechanical electronic device which continuously measures the width of film to an accuracy of 0.002 mm. The basic circuit is quartz oscillator having a L.C. circuit which is slightly detuned from the resonant frequency. The percentage detuning gives a measure of the film width. Curve shows that for a film variation of 0.250 mm the relationship between film width and measurable current is linear. An inexpensive 0–1 milliammeter can be used without sacrificing accuracy.
Publication Date
1943-11-01
DOI
10.5594/J09793
Link
https://doi.org/10.5594/J09793
Author(s)
S. C. Coroniti, H. Scott Baldwin
Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J09793.json

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S. C. Coroniti and H. Scott Baldwin; Precision Recording Instrument for Measuring Film Width, Journal of the Society of Motion Picture Engineers ( Volume: 41, Issue: 11, November 1943); SMPTE, 1943. Available at https://doi.org/10.5594/J09793
Snippet:
S. C. Coroniti and H. Scott Baldwin; Precision Recording Instrument for Measuring Film Width, Journal of the Society of Motion Picture Engineers ( Volume: 41, Issue: 11, November 1943); SMPTE, 1943. Available at https://doi.org/10.5594/J09793

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S. C. Coroniti and H. Scott Baldwin; Precision Recording Instrument for Measuring Film Width, Journal of the Society of Motion Picture Engineers ( Volume: 41, Issue: 11, November 1943); SMPTE, 1943. Available at https://doi.org/10.5594/J09793
Snippet:
<span class="citation">S. C. Coroniti and H. Scott Baldwin; <cite>Precision Recording Instrument for Measuring Film Width</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 41, Issue: 11, November 1943); SMPTE, 1943. Available at <a href="https://doi.org/10.5594/J09793" target="_blank" rel="noopener">https://doi.org/10.5594/J09793</a></span>

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Preview:
S. C. Coroniti and H. Scott Baldwin; Precision Recording Instrument for Measuring Film Width, Journal of the Society of Motion Picture Engineers ( Volume: 41, Issue: 11, November 1943); SMPTE, 1943
doi: 10.5594/J09793
url: https://doi.org/10.5594/J09793
Snippet:
<li>
S. C. Coroniti and H. Scott Baldwin; <cite id="bib-10-5594-j09793">Precision Recording Instrument for Measuring Film Width</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 41, Issue: 11, November 1943); SMPTE, 1943
<span class="doi">10.5594/J09793</span>
</li>