Acu-Rule Arel G-W Photographic Slide Rule

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Country of manufacture: USA,            Date of manufacture: ____
Overall length: 29.0 cm,          Width: 2.8 cm,           Weight: 59.8 gms
Materials: plastic stators and slide, metal end braces on back side; adjustable
Cursor: 2.5 X 3.4 X 0.6 cms; all plastic; lines = three, front side only
Scales: specialized
Front: Film Speed (Weston & ASA ratings), f-stop [ Daylight: Light, Sky Type, Subject, shutter speed, Filter-time Factors, Gamma Factors, Depth of Focus ] Depth of Focus
Back: Common Film Speeds (Daylight & Tungsten) [ Artificial: Light, Sky Type, Subject, shutter speed, Filter-time Factors, Gamma Factors, Depth of Focus ] Common Film Speeds (Daylight & Tungsten)
Condition: C3-C4 (Very minimal to minimal signs of use)
Came with: Original cardboard box and instruction manual

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