6" C-Thru Proportional Scale (Reference #PS79) 6" or 8" diameter proportional scales for the calculation of enlargements, reduction of photographics, artwork and layouts. Provides the number of times of reduction as well as the percentage of enlargement or reduction. To avoid confusion fractions printed in blue enable calculations below 1". Price:   (5 or fewer items)  $4.49 Price:   (6 or more items)  $3.82 Quantity:

8" C-Thru Proportional Scale (Reference #PS80) 6" or 8" diameter proportional scales for the calculation of enlargements, reduction of photographics, artwork and layouts. Provides the number of times of reduction as well as the percentage of enlargement or reduction. To avoid confusion fractions printed in blue enable calculations below 1". Price:   (5 or fewer items)  $5.29 Price:   (6 or more items)  $4.50 Quantity:

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