TRAC Fishing Barometer
Increase your fishing success by tracking changes in barometric pressure with this Fishing Barometer from TRAC. Barometric pressure has a dramatic impact on fish feeding habits, and this very portable 3-1/4'' TRAC Fishing Barometer features a multicolored key and indicator needle which indicates whether fishing conditions are excellent, good, or poor.
- Track changes in barometric pressure
- Multicolored key and indicator needle
- "Interprets" fishing conditions
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how i need to rotate the pointer to calibrate with 1.020 mb pressure ?