Photo-tide level recorder

Details Photo-tide level recorder Photo-tide level recorder

1980-02-01

1981-05-19

Miller, Jr., George H.

Recorders

Light or beam recording

Including record receiver or handling means therefor

73312, G01D 942, G01F 2306

Patent

active

042688396

ABSTRACT:
A tide level recorder records tide elevations utilizing a free floating graduated rod-staff, against a fixed index mark, simultaneous with a chronometer reading. The free floating graduated rod-staff eliminates mechanical errors evident in existing tide level recorders with counter weights and springs.

REFERENCES:
patent: 1054849 (1913-03-01), Lawrence
patent: 2657577 (1953-11-01), Falk
patent: 2716341 (1955-08-01), Ilfrey et al.
patent: 3618122 (1971-11-01), Maschak

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