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Lighters with working slide rules or slide rule logos
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Firefly lighter with Post logo.
1.5 by 2.25 inches.
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Brown & Bigelow
Remembrance (R) Wind Master (R)
with K+E logo.
1.5 by 2.25 inches.
Advertising item for "The Hirshberg Co." Distributors for
K+E electronic slide rules.
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Corona lighter with working STAR circular slide rule.
1.5 by 2.25 inches.
The slide rule is equivalent to a 3 inch straight slide rule.
Has C, D, and A scales with a cursor.
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