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Slate Sizes and Names

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Slate Rule

Slate Sizes and Names

Lengths in inches and traditional names of the courses. Provided by Mr. J.J. Harrod, mater slater and quarry owner.

Top of Roof

Anything under 6" is called an OUTRULE

6" even mope

6 1/2" large mope

7" even mumford

7 1/2" large mumford

8" even job

8 1/2" large job

9" even short-un

9 1/2" large short-un

10" even long-un

10 1/2" large long-un

11" even shortback

11 1/2" large shortback

12" even middleback

12 1/2" large middleback

13" even longback

13 1/2" large longback

14" batchelor

15" wibbet

16" twelve

17" fourteen

18" sixteen

19" eighteen

20" in-bow

21" out-bow

22" short ten

23" middle ten

24" long ten

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