GB596096A - Improvements in or relating to optical scale-reading apparatus - Google Patents
Improvements in or relating to optical scale-reading apparatusInfo
- Publication number
- GB596096A GB596096A GB1843445A GB1843445A GB596096A GB 596096 A GB596096 A GB 596096A GB 1843445 A GB1843445 A GB 1843445A GB 1843445 A GB1843445 A GB 1843445A GB 596096 A GB596096 A GB 596096A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scale
- length
- vernier
- graticule
- stop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
596,096. Measures of length. KAPELLA, Ltd., and CLIFFORD, T. W. July 18, 1945, No. 18434. Addition to 544,938, [Group XX]. [Class 106 (ii)] [Also in Group XX] A vernier apparatus for reading a scale and which may be applied to a linear dimension gauge as described in Specification 557,012, [Group XX], comprises a reference line on a movable graticule and substantially perpendicular to the length of the scale, and a pair of co-operating markings comprising a vernier scale substantially perpendicular to the length of the scale under observation and a second reference line substantially perpendicular to the vernier (one of the pair being fixed and the other on the graticule) substantially as described in the parent Specification and, for observing both scales and reference lines, a magnifying lens adjacent which is a stop narrow in the direction of the length of the scale and elongated in the direction perpendicular thereto, parallax being minimized by observation through the stop. As shown, the scale B is observed through an aperture E<1> in the stop E, the outer areas of which may be coloured or semitransparent, supported in a frame A carrying the lens D and having feet A<1> treating it on scale B. A graticule C movable at a slight angle transversely of the scale B by a micrometer screw (not shown) carries one or two vernier scales and a reference line, all of which are perpendicular to the length of the scale.
Publications (1)
Publication Number | Publication Date |
---|---|
GB596096A true GB596096A (en) | 1947-12-29 |
Family
ID=1733913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1843445A Expired GB596096A (en) | 1945-07-18 | Improvements in or relating to optical scale-reading apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB596096A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3512862A (en) * | 1967-12-27 | 1970-05-19 | Paul H C Yin | Readers for scale |
US4331381A (en) * | 1980-06-16 | 1982-05-25 | Hunter Radcliffe W | Magnifying device |
-
1945
- 1945-07-18 GB GB1843445A patent/GB596096A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3512862A (en) * | 1967-12-27 | 1970-05-19 | Paul H C Yin | Readers for scale |
US4331381A (en) * | 1980-06-16 | 1982-05-25 | Hunter Radcliffe W | Magnifying device |
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