The New Typography

(Continuation of explanations t 9 Norm DIN 476)
ORIGINAL FORMAT
For the original format with sides x and y the same two equations apply
because of the above 3 principles x:y = 1 :-J2
xxy=1
The original format, rectangle with area of 1 m^2 has sides of
x = 0. 841 m y = 1.189 m
ORIGINAL RANGE A (Preferred range)
Following equation 1, the range in original format continues by consecutive
halving to make original range A.
ADDITIONAL RANGES B C D
For connected paper sizes. e.g. envelopes. booklets, wallets. etc., the addi­
tional ranges B C and 0 are listed. The B range formats are the geometric
means of the A range. The C and 0 ranges are again the geometric means
of the A and B ranges.

STRIP FORMATS
Strip formats are made by halving, quartering, etc. the main format length:

Format Abbrviation e- mm

Ha If I ength A4 1hA4 105 X 297

Quarter length A4 ';, A4 52 X 297

Eighth length A7 1/s A7 9 X 105

Half length C 4 'h C 4 114 X 324

etc.

Applications: Envelopes, labels, tickets. coupons, technical drawings, etc.