FIELD: calculating devices. SUBSTANCE: calculating device has a base, housing with a slot, scales, roller with spiral line and limb, fixed indicator; auxiliary spiral lines of the roller being colored in different colors the number of which corresponds to vernier relation with divisions of scales disposed on the housing, slider with scales. EFFECT: simplified construction. 2 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| INERTIA T-SQUARE | 1991 |
|
RU2102248C1 |
| SUMMATION RULE | 0 |
|
SU1791821A1 |
| DRAWING DEVICE | 0 |
|
SU1735062A1 |
| 0 |
|
SU31676A1 | |
| 0 |
|
SU2061A1 | |
| DEVICE TO SOLVE NAVIGATIONAL PROBLEMS | 1990 |
|
RU2028667C1 |
| 0 |
|
SU117763A1 | |
| 0 |
|
SU92927A1 | |
| COMPUTING DEVICE | 0 |
|
SU911544A1 |
| CALCULATING RULE | 0 |
|
SU1275474A1 |
