Editing Paper size (section)

====Soviet variants<span class="anchor" id="OST 303"></span><span class="anchor" id="OST 5115"></span>====

The first standard of paper size in the Soviet Union was OST 303 in 1926. Six years later, it was replaced by OST 5115 which generally followed DIN 476 principles, but used Cyrillic lowercase letters instead of Latin uppercase, had the second row shifted so that б<sub>0</sub> (B0) roughly corresponded to B1 and, more importantly, had slightly different sizes:<ref>{{Cite web |last=Митяев |first=К. Г. |date=1946 |title=Теория и практика архивного дела |trans-title=Theory and practice of archiving |url=http://www.spsl.nsc.ru/FullText/Книги/Уст.%20902%20М.678/Уст.%20902%20М.678.pdf |url-status=dead |archive-url=https://web.archive.org/web/20200208012944/http://www.spsl.nsc.ru/FullText/%D0%9A%D0%BD%D0%B8%D0%B3%D0%B8/%D0%A3%D1%81%D1%82.%20902%20%D0%9C.678/%D0%A3%D1%81%D1%82.%20902%20%D0%9C.678.pdf |archive-date=2020-02-08 |access-date=2022-07-15}}</ref>

{| class="wikitable"
|+ OST 5115 formats (1932)
! Format !!colspan=2| а (A) !!colspan=2| б (B) !!colspan=2| в (V, C)
|-
! Size 
! mm × mm !! inch × inch
! mm × mm !! inch × inch
! mm × mm !! inch × inch
|-
! 0
| {{size|814|1152}} || {{size|747|1056}} ||colspan=2|
|-
! 1
| {{size|576|814}}|| {{size|528|747}}|| {{size|628|888}}
|-
! 2
| {{size|407|576}}|| {{size|373|528}}|| {{size|444|628}}
|-
! 3
| {{size|288|407}}|| {{size|264|373}}|| {{size|314|444}}
|-
! 4
| {{size|203|288}}|| {{size|186|264}}|| {{size|222|314}}
|-
! 5
| {{size|144|203}}|| {{size|132|186}}|| {{size|157|222}}
|-
! 6
| {{size|101|144}}|| {{size|93|132}}|| {{size|111|157}}
|-
! 7
| {{size|72|101}}|| {{size|66|93}}|| {{size|78|111}}
|-
! 8
| {{size|50|72}}|| {{size|46|66}}|| {{size|55|78}}
|-
! 9
| {{size|36|50}}|| {{size|33|46}}|| {{size|39|55}}
|-
! 10
| {{size|25|36}}|| {{size|23|33}} ||colspan=2 rowspan=4|
|-
! 11
| {{size|18|25}}|| {{size|16|23}}
|-
! 12
| {{size|12|18}}|| {{size|11|16}}
|-
! 13
| {{size|9|12}} ||colspan=2|
|}

The general adaptation of ISO 216 in the Soviet Union, which replaced OST 5115, was GOST 9327. In its 1960 version, it lists formats down to A13, B12 and C8 and also specifies {{frac|1|2}}, {{frac|1|4}} and {{frac|1|8}} prefixes for halving the shorter side (repeatedly) for stripe formats, e.g. {{frac|1|2}}A4 = 105&nbsp;mm × 297&nbsp;mm.

[[File:Old Soviet standard for paper sizes.svg|thumb|A1, A2, A3, A4 and non-ISO sizes as GOST 3450-60 formats]]
A standard for technical drawings from 1960, GOST 3450,<ref>{{cite web |url=http://weldworld.ru/theory/cherchenie/formaty.html#link2 |title=Formaty |script-title=ru:Форматы |trans-title=Formats |website=Мир Сварки |language=ru |access-date=2 December 2017 |archive-url=https://web.archive.org/web/20171202203209/http://weldworld.ru/theory/cherchenie/formaty.html#link2 |archive-date=2 December 2017 |url-status=live}}</ref> introduces alternative numeric format designations to deal with very high or very wide sheets.
These 2-digit codes are based upon A4 = "11": The first digit is the factor the longer side (297&nbsp;mm) is multiplied by and the second digit is the one for the shorter side (210&nbsp;mm), so "24" is 2×297&nbsp;mm × 4×210&nbsp;mm = 594&nbsp;mm × 840&nbsp;mm.

{| class="wikitable"
|+ Soviet formats with multiplied shorter side (mm×mm)
|-
| ''n''
! (×1) !! ×2 !! ×3 !! ×4 !! ×5 !! ×6
|-
!title="4·4n"| 5
|title="4·4"| = A0 ||title="4·8"| = 2A0||title="4·12"|2523 × 1189||title="4·16"|3364 × 1189||title="4·20"|4204 × 1189 ||title="4·24"|5045 × 1189
|-
!title="2n·4"| 4
|title="2·4"| = A1 ||title="4·4"| = A0 ||title="6·4"|1784 × 841 ||title="8·4"|2378 × 841 ||title="10·4"|2973 × 841 ||title="12·4"|3568 × 841
|-
!title="2·2n"| 3
|title="2·2"| = A2 ||title="2·4"| = A1  ||title="2·6"|1261 × 595 ||title="2·8"|1682 × 595 ||title="2·10"|2102 × 595 ||title="2·12"|2523 × 595
|-
!title="n·2"|  2 
|title="1·2"| = A3 ||title="2·2"| = A2  ||title="3·2"| 892 × 420 ||title="4·2"|1189 × 420 ||title="5·2"|1487 × 420 ||title="6·2"|1784 × 420
|-
!title="1·n"| 1
|title="1·1"| = A4 ||title="1·2"| = A3  ||title="1·3"| 631 × 297 ||title="1·4"| 841 × 297 ||title="1·5"|1051 × 297 ||title="1·6"|1261 × 297
|-
!title="{{frac|1|2}}n·1"| 0
|title="{{frac|1|2}}·1"| = A5 ||title="1·1"| = A4  ||title="{{frac|1|1|2}}·1"|446 × 210 ||title="2·1"| 595 × 210 ||title="{{frac|2|1|2}}·1"| 743 × 210 ||title="3·1"| 892 × 210
|}

[[File:GOST 2301-68.svg|thumb|A2, A3, A4 and some derived non-ISO sizes as GOST 2301-68 formats]]
GOST 3450 from 1960 was replaced by ESKD GOST 2301 in 1968,<ref>{{cite web |url=http://graph.power.nstu.ru/wolchin/umm/eskd/eskd/GOST/2_301.htm |script-title=ru:Форматы (ЕСКД ГОСТ 2.301-68) |title=Formaty (ESKD GOST 2.301-68) |trans-title=Formats |website=Единая Система Конструкторской Документации |language=ru |access-date=2 December 2017 |archive-url=https://web.archive.org/web/20161201015706/http://graph.power.nstu.ru/wolchin/umm/eskd/eskd/GOST/2_301.htm |archive-date=1 December 2016 |url-status=live}}</ref> but the numeric designations remained in popular use much longer.
The new designations were not purely numeric but consisted of the ISO label followed by an 'x', or possibly the multiplication sign '×', and the factor, e.g. DIN 2A0 = GOST A0×2, but DIN 4A0 ≠ GOST A0×4, also listed are: A0×3, A1×3, A1×4, A2×3–A2×5, A3×3–A3×7, A4×3–A4×9. The formats ...×1 and ...×2 usually would be aliases for existing formats.