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Laboratory Manual for Introductory Geology 4e

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Align with northern latitude tick mark

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Subtract from northern latitude tick mark

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Ludman-Marshak

Geologic Tool Kit

Latitude Scale

(for 1:24,000 maps only)

Align top or bottom of scale with

latitude tick on side of map.

Draw line from point to be

located to scale, parallel to red

lines.

Read directly to nearest 10 and

use scale below for nearest 1

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Add to southern latitude tick mark

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Align with southern latitude tick mark

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