大正

TAISHO.DAY

STATION OPERATIONS // IMPERIAL OBSERVATORY
CHRONOMETER --:--:-- JST
UNIT 01 / OSCILLOSCOPE

CENTRAL OBSERVATION DISPLAY

N 35°41' E 139°41'
CH-A0428mV
CH-B0193mV
FREQ12.7Hz
PHASE+037°
scope traced 04:18 // operator T.K.
resonant signal — fair stability
■ LOG 0428 SWEEP 200ms/div VOLT 50mV/div TRIG AUTO
UNIT 02

BAROMETER

1013.2
fair — slow rise
UNIT 03

THERMOMETER

18.4°C ambient // panel 03
temperate — steady
UNIT 04

SEISMOGRAPH

FEED 2mm/sec — quiet ground —
UNIT 05 / LEDGER

STATION LOG

  1. 04:18:02resonant tone established on channel A
  2. 04:14:47barograph trace shows slow rise — fair
  3. 04:09:15teletype reels reloaded // operator T.K.
  4. 04:02:33north heading verified against polaris
  5. 03:55:08lamp 03 reseated — luminance restored
— hand-logged by station commander —
UNIT 06

COMPASS ROSE

HEADING 000.0°
aligned to true north // 大正