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March 30, 1867 was the day Secretary of State, William H. Seward purchased Alaska, 375 million acres, for $7.2 million, less than $0.02 an acre.
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Instruments \ Gravity \
Name: |
Gulf Water Bottom Pendulum Apparatus Case |
Date: |
Circa 1932 |
Item Number: |
87.21.06 |
Donor: |
Lamont-Doherty Geological Observatory |
Type: |
N/A |
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Manufacturer:
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Gulf R & D, Pittsburgh, PA |
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Description:
(87.21.06a, 87.21.06b, multiple entries (lines 1109 and 1301))
(Gulf Type Pendulum Apparatus; Cast aluminum container 58 cm W; 52.5 cm H; 34 cm D
(Pendulums for Gulf Type Pendulum Apparatus; Two pendulums made of quartz, each 32.3 cm L; 5.5 cm W and 6.4 cm Thick.
Item #06 is an empty Gulf Pendulum case; no pendulums in it; the clamping
mechanism and prisms are inside.
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