Tungsten carbide slip gauge blocks. These are used as a standard form of length measurement. They are precision ground (lapped) to a specific thicknes

Tungsten carbide slip gauge blocks. These are used as a standard form of length measurement. They are precision ground (lapped) to a specific thicknes Stock Photo
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Contributor:

Science Photo Library / Alamy Stock Photo

Image ID:

2ACPF1Y

File size:

51.3 MB (1.1 MB Compressed download)

Releases:

Model - no | Property - noDo I need a release?

Dimensions:

3747 x 4783 px | 31.7 x 40.5 cm | 12.5 x 15.9 inches | 300dpi

Date taken:

10 May 2013

More information:

Tungsten carbide slip gauge blocks. These are used as a standard form of length measurement. They are precision ground (lapped) to a specific thickness and then stacked to create the required length. The instructions inside the lid of the box refer to 'wringing', the process of placing two or more gauge blocks together so that the ultra-flat surfaces adhere to each other. A series of such wrung blocks will support their own weight. Photographed at the National Physical Laboratory, Teddington, UK.