AT&T B Drop Wire Rule

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Country of manufacture: USA,            Date of manufacture: >=1951
Overall Dimensions:: 16.2 X 10.2 cm,          Thickness: 0.4 cm.,           Weight: 35.6 gms.
Materials: Plastic rectangular base, with sliding catenary curve 'cursor', and sliding nomograph axis for 'Height of House Attachment in Feet'
Cursor: 15.0 X 3.3 cm catenary curve constrained in a sliding base via a single rivet.
Scales: specailized
Front: Height of Pole Attachment in Feet, Ground Clearace on Feet, Span Length in Feet, Distance From Pole in Feet
Back: Instructions for use
Condition: C5 (Signs of Normal use)
Came with: nothing

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