DE269898C - - Google Patents
Info
- Publication number
- DE269898C DE269898C DENDAT269898D DE269898DA DE269898C DE 269898 C DE269898 C DE 269898C DE NDAT269898 D DENDAT269898 D DE NDAT269898D DE 269898D A DE269898D A DE 269898DA DE 269898 C DE269898 C DE 269898C
- Authority
- DE
- Germany
- Prior art keywords
- pointer
- ruler
- visor
- eye
- pencil
- 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
- 230000002349 favourable effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/14—Devices for drawing in perspective
- B43L13/16—Devices for drawing in perspective free-hand
- B43L13/18—Devices for drawing in perspective free-hand having optical or projecting equipment
Landscapes
- Toys (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE269898C true DE269898C (cg-RX-API-DMAC7.html) |
Family
ID=526707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT269898D Active DE269898C (cg-RX-API-DMAC7.html) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE269898C (cg-RX-API-DMAC7.html) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1208505B (de) * | 1960-07-22 | 1966-01-05 | Walter Spielvogel | Verfahren und Vorrichtung zum perspektivischen Zeichnen |
-
0
- DE DENDAT269898D patent/DE269898C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1208505B (de) * | 1960-07-22 | 1966-01-05 | Walter Spielvogel | Verfahren und Vorrichtung zum perspektivischen Zeichnen |
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