GB623867A - Improvements in or relating to magnifiers such as linen testers - Google Patents
Improvements in or relating to magnifiers such as linen testersInfo
- Publication number
- GB623867A GB623867A GB1371547A GB1371547A GB623867A GB 623867 A GB623867 A GB 623867A GB 1371547 A GB1371547 A GB 1371547A GB 1371547 A GB1371547 A GB 1371547A GB 623867 A GB623867 A GB 623867A
- Authority
- GB
- United Kingdom
- Prior art keywords
- graticule
- linen
- magnifier
- lazy
- tongs
- 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
- G01B9/00—Measuring instruments characterised by the use of optical techniques
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lenses (AREA)
Abstract
623,867. Magnifying apparatus. PYSER, C. S., and CHANDLER, E. May 21, 1947, No. 13715. [Class 97 (i)] A magnifier, particularly for linen testing, comprises a base 10 having an aperture containing a suitable graticule 38 and a member 13 carrying a lens 36 and connected thereto by a pair of lazy-tongs 16 so as to fold flat against the member 10 and to be opened therefrom to a distance at which a magnified virtual image of the graticule, and of the object on which the magnifier is placed, is formed by the lens. One arm of each lazy-tongs is connected to each of the members by a pin and slot 29, 28 and 31, 30 so as to permit folding. The graticule 38 is so mounted as to be recessed from the base of the member 10 to avoid scratching thereof and consists of a glass plate bearing suitable measuring scales.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1371547A GB623867A (en) | 1947-05-21 | 1947-05-21 | Improvements in or relating to magnifiers such as linen testers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1371547A GB623867A (en) | 1947-05-21 | 1947-05-21 | Improvements in or relating to magnifiers such as linen testers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB623867A true GB623867A (en) | 1949-05-24 |
Family
ID=10028051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1371547A Expired GB623867A (en) | 1947-05-21 | 1947-05-21 | Improvements in or relating to magnifiers such as linen testers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB623867A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2220276A (en) * | 1988-06-21 | 1990-01-04 | Declan Gerard Anthony Mccarthy | Multi-purpose reading aid |
-
1947
- 1947-05-21 GB GB1371547A patent/GB623867A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2220276A (en) * | 1988-06-21 | 1990-01-04 | Declan Gerard Anthony Mccarthy | Multi-purpose reading aid |
GB2220276B (en) * | 1988-06-21 | 1992-04-22 | Declan Gerard Anthony Mccarthy | Multi-purpose reading aid |
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