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File:McLeod gauge 01.jpg

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Description An old McLeod gauge is low pressure measuring instrument, which is used for high precision measurement of vacuum. As shown, it has been drained of mercury. This gauge is on display in the lobby of the Science building at Winthrop University. The vacuum port is not visible in the photograph; it runs through the center bearing and opens on the far side. The left hand column is sealed off at the top; this is visible by zooming in on the picture. The gauge was rotated clockwise to reset and counterclockwise to measure. Photo by Yannick Trottier, April 10th, 2006. Derivative image by Amada44
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This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: removed background. The original can be viewed here: McLeod gauge.jpg: . Modifications made by Amada44.

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This image is a derivative work of the following images:

  • File:McLeod_gauge.jpg licensed with Cc-by-2.5, Cc-by-sa-3.0-migrated, GFDL
    • 2006-04-10T03:36:13Z Ytrottier 1712x2288 (559563 Bytes) An old McLeod gauge used for high precision measurement of vacuum. As shown, it has been drained of mercury. This gauge is on display in the lobby of the Science building at Winthrop University. The vacuum port is not visible

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https://www.aceglass.com/results.php?t=8726

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inception

4 November 2009

data size

773,417 byte

height

2,296 pixel

width

1,461 pixel

media type

image/jpeg

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a78c5331a2f0c527cdc8a1855b982531d44692e5

determination method or standard: SHA-1

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0.0333333333333333 second

focal length

6.5 millimetre

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Date/TimeThumbnailDimensionsUserComment
current10:59, 4 November 2009Thumbnail for version as of 10:59, 4 November 20091,461 × 2,296 (755 KB)Amada44{{Information |Description=== removed background |Source=*File:McLeod_gauge.jpg |Date=2009-11-04 10:55 (UTC) |Author=*File:McLeod_gauge.jpg: Ytrottier *derivative work: ~~~ |Permission=see below |other_versions= }} {{RetouchedPicture|removed

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