Twelve inch cylindrical metal rod

Made:: 1948-1961

This image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print

License this image for commercial use at Science and Society Picture Library

Twelve inch cylindrical metal rod, 'Merton's Helix'
Science Museum Group
© The Board of Trustees of the Science Museum

Twelve inch cylindrical metal rod, 'Merton's Helix', used to make primary and secondary rulings of 7500 lines/ inch, enclosed in perspex tube, 1948-1961.

Details

Category:: Optics

Object Number:: 1961-253

Materials:: metal, acrylic and steel

Measurements:: overall: 387 mm x x , 51 mm, 1.84kg

type:: rod

credit:: National Physical Laboratory.

Cite this page

Rights

We encourage the use and reuse of our collection data.

Data in the title, made, maker and details fields are released under Creative Commons Zero . Descriptions and all other text content are licensed under a Creative Commons Attribution 4.0 licence

Using our data

Download

Download catalogue entry as json

Download manifest IIIF

Our records are constantly being enhanced and improved, but please note that we cannot guarantee the accuracy of any information shown on this website.

Twelve inch cylindrical metal rod

Details

Related Objects

Refracting telescope with achromatic lens, made by the Dollond family

Handheld reading lens and case

Telescope by John Marshall

‘Visual glasses’ designed by Benjamin Martin

Pair of plastic National Health Service spectacles

Telescope by John Yarwell.