JP2532936Y2 - 度数計 - Google Patents
度数計Info
- Publication number
- JP2532936Y2 JP2532936Y2 JP1990068522U JP6852290U JP2532936Y2 JP 2532936 Y2 JP2532936 Y2 JP 2532936Y2 JP 1990068522 U JP1990068522 U JP 1990068522U JP 6852290 U JP6852290 U JP 6852290U JP 2532936 Y2 JP2532936 Y2 JP 2532936Y2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- oscillator
- frequency counter
- counter input
- measuring instrument
- 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 - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 13
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 2
- 230000004397 blinking Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000010291 electrical method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990068522U JP2532936Y2 (ja) | 1990-06-29 | 1990-06-29 | 度数計 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990068522U JP2532936Y2 (ja) | 1990-06-29 | 1990-06-29 | 度数計 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0429842U JPH0429842U (enrdf_load_stackoverflow) | 1992-03-10 |
| JP2532936Y2 true JP2532936Y2 (ja) | 1997-04-16 |
Family
ID=31603030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990068522U Expired - Lifetime JP2532936Y2 (ja) | 1990-06-29 | 1990-06-29 | 度数計 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2532936Y2 (enrdf_load_stackoverflow) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5449173A (en) * | 1977-09-26 | 1979-04-18 | Seiko Epson Corp | Electronic watch |
| JPS5814019A (ja) * | 1981-07-20 | 1983-01-26 | Ricoh Elemex Corp | 調律器 |
-
1990
- 1990-06-29 JP JP1990068522U patent/JP2532936Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0429842U (enrdf_load_stackoverflow) | 1992-03-10 |
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