KELVIN & HUGHES English Brass ship Parallel Ruler with original case

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KELVIN & HUGHES English Brass ship Parallel Ruler with original case :
$65.00

Brass navigational instrument. Parallel Ruler w/original case. Case in very good condition. Case is missing the knob that locks the case. See photo. Parallel Ruler is in very good condition. Approximately 24\" long. Please review all photos and ask questions before offerding.