JPH0321497Y2 - - Google Patents

Info

Publication number
JPH0321497Y2
JPH0321497Y2 JP1821985U JP1821985U JPH0321497Y2 JP H0321497 Y2 JPH0321497 Y2 JP H0321497Y2 JP 1821985 U JP1821985 U JP 1821985U JP 1821985 U JP1821985 U JP 1821985U JP H0321497 Y2 JPH0321497 Y2 JP H0321497Y2
Authority
JP
Japan
Prior art keywords
voltage
recording
fish
density
recording paper
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
Application number
JP1821985U
Other languages
English (en)
Japanese (ja)
Other versions
JPS61135279U (cs
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1821985U priority Critical patent/JPH0321497Y2/ja
Publication of JPS61135279U publication Critical patent/JPS61135279U/ja
Application granted granted Critical
Publication of JPH0321497Y2 publication Critical patent/JPH0321497Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
JP1821985U 1985-02-12 1985-02-12 Expired JPH0321497Y2 (cs)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1821985U JPH0321497Y2 (cs) 1985-02-12 1985-02-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1821985U JPH0321497Y2 (cs) 1985-02-12 1985-02-12

Publications (2)

Publication Number Publication Date
JPS61135279U JPS61135279U (cs) 1986-08-23
JPH0321497Y2 true JPH0321497Y2 (cs) 1991-05-10

Family

ID=30506646

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1821985U Expired JPH0321497Y2 (cs) 1985-02-12 1985-02-12

Country Status (1)

Country Link
JP (1) JPH0321497Y2 (cs)

Also Published As

Publication number Publication date
JPS61135279U (cs) 1986-08-23

Similar Documents

Publication Publication Date Title
US4622978A (en) Ultrasonic diagnosing apparatus
JPS6224747B2 (cs)
US3174127A (en) Echo sounding
GB927195A (en) Improvements in vibration testing systems
GB1587544A (en) Automatic sensitivty adjustment apparatus for the calibration of a non-destructive inspection instrument
RU2098838C1 (ru) Способ определения расстояния до места повреждения и длины проводов и кабелей линий электропередачи и связи и устройство для его осуществления
US4119942A (en) Acoustic direction finder
JPH0321497Y2 (cs)
US4083255A (en) Hydro-optic vibration detector
US4213085A (en) Phase inversion test device
US3351895A (en) Depth indicator and controller
GB929631A (en) Traffic monitoring system
Ebaugh et al. The practical application of the reciprocity theorem in the calibration of underwater sound transducers
US2761320A (en) Sea state meter
JPH02711Y2 (cs)
GB1498843A (en) Acoustic camera apparatus
SU1677531A1 (ru) Устройство дл измерени физико-механических параметров среды
SU572704A1 (ru) Устройство дл ультразвукового контрол
US3447123A (en) Detection and display system
RU2006200C1 (ru) Способ калибровки гидроакустической измерительной аппаратуры при оценке рыбных запасов с помощью телевизионной аппаратуры и устройство для его осуществления
JPS61265590A (ja) 魚群探知機
JPS6241020B2 (cs)
Schaffner et al. Information from bias measurements(on statistical characteristics of fluctuating radar signal)
SU918822A1 (ru) Устройство дл определени оптических характеристик атмосферы
SU951730A1 (ru) Устройство контрол интермодул ционных и побочных каналов в радиоприемниках