Split-lens eyepiece position micrometer with spherical crystal micrometer and eyepiece dynameter

Made:: 1820-1830 in London

maker:: George Dollond

Split-lens eyepiece position micrometer with spherical crystal micrometer and eyepiece dynameter, all by George Dollond, London in fitted mahogany box, 1820-1830.

Details

Category:: Astronomy

Object Number:: 1994-496

Materials:: brass, glass, mahogany and complete

Measurements:: overall (cae): 85 x 165 x 100 mm

type:: crystal micrometer, split-lens eyepiece micrometer and dynameter

credit:: Tesseract

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

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.

Parts

Dynamameter eyepiece micrometer

Dynamameter eyepiece micrometer

Dynamameter eyepiece micrometer, one of three micrometers by George Dollond, London in the same fitted mahogany box, c. 1825.

Materials:: brass (copper, zinc alloy) , glass and complete

Object Number:: 1994-496 Pt1

type:: dynameter and instrument component

Image ©: The Board of Trustees of the Science Museum

Split-lens eyepiece position micrometer

Split-lens eyepiece position micrometer

Split-lens eyepice postion micrometer, one of three micrometers by George Dollond, London in the same fitted mahogany box, 1820-1830.

Materials:: brass (copper, zinc alloy) , glass and complete

Object Number:: 1994-496 Pt2

type:: split-lens eyepiece micrometer and instrument component

Image ©: The Board of Trustees of the Science Museum

Mahogany case for split-lens eyepiece micrometer

Mahogany case for split-lens eyepiece micrometer

Mahogany case for split-lens eyepiece micrometer, spherical crystal micrometer and eyepiece dynamometer by George Dollond, London, 1820-1830.

Materials:: complete , brass (copper, zinc alloy) and mahogany (wood)

Object Number:: 1994-496 Pt3

type:: instrument case

Image ©: The Board of Trustees of the Science Museum

Crystal micrometer, one of three by George Dollond

Crystal micrometer, one of three by George Dollond

Crystal micrometer, one of three micrometers by George Dollond, London in the same fitted mahogany box, 1820-1830.

Materials:: brass (copper, zinc alloy) , glass and complete

Object Number:: 1994-496 Pt4

type:: crystal micrometer and instrument component

Image ©: The Board of Trustees of the Science Museum