Definition of Focuser

1. Noun. A device which allows one to adjust the focus of an instrument such as a telescope. ¹

¹ Source: wiktionary.com

Definition of Focuser

1. one that focuses [n -S]

Lexicographical Neighbors of Focuser

focimetry
focus
focus-forming unit
focus-group
focus-grouped
focus-grouping
focus-groups
focus group
focus groups
focus on
focusability
focusable
focused
focused grid
focuser (current term)
focusers
focuses
focusing
focusing device
focusing magnifier
focusings
focusless
focussed
focusses
focussing
fodder
foddered
fodderer

Literary usage of Focuser

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Encyclopædic Dictionary of Photography: Containing Over 2,000 References by Walter E. Woodbury (1896)
"Also called the focuser, focusing magnifier, compound focuser, etc. A magnifying glass fitted in a tube, and so arranged that the image upon the focusing ..."

2. Practical Photo-micrography: By the Latest Methods by Andrew Pringle (1890)
"... none the less the glass plate affords a convenient rest for the Ramsden or Aplanatic, but there must be no heavy pressure of focuser on screen. ..."

3. Practical Photo-micrography: By the Latest Methods by Andrew Pringle (1890)
"... but there must be no heavy pressure of focuser on screen. There are many other ways of producing a focusing screen but probably the best have been here ..."

4. We and Our Children by Woods Hutchinson (1911)
"To put it very crudely, a little ball of cells has formed itself in the centre of eye, for the purpose of acting as a lens or focuser of the light rays. ..."

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