DE222297C - - Google Patents
Info
- Publication number
- DE222297C DE222297C DENDAT222297D DE222297DA DE222297C DE 222297 C DE222297 C DE 222297C DE NDAT222297 D DENDAT222297 D DE NDAT222297D DE 222297D A DE222297D A DE 222297DA DE 222297 C DE222297 C DE 222297C
- Authority
- DE
- Germany
- Prior art keywords
- reading
- magnifying glass
- runner
- frame
- slide
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G1/00—Hand-manipulated computing devices
- G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
- G06G1/04—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Lenses (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE222297C true DE222297C (https=) |
Family
ID=483203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT222297D Active DE222297C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE222297C (https=) |
-
0
- DE DENDAT222297D patent/DE222297C/de active Active
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