OS One Inch Fifth Edition

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Steven
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OS One Inch Fifth Edition

Post by Steven » Sat Oct 03, 2020 09:59

The OS One Inch Fifth Edition was a strange little beast. It was intended to replace the old Popular Edition maps, but ironically in Scotland at least, the older map lasted longer, as the Fifth Edition had a production life of 10 years. It changed the depiction of hills from contours to shadings, but that was generally unpopular so it got changed back again - so there were sometimes two maps of the same sheet produced at the same time, one "relief" edition and one "contour" edition that are otherwise identical.

It's got a general brown colour tone and was called "muddy" at the time.

It was the first One Inch map to be produced on the GB National Grid. But it was measured in yards (hence the National Yard Grid retcon), not metres as we know it today.

Because of various problems in production, it only covered southern parts of England - and not all of it at that! There was no Fifth Edition map that covered Dover for example.

All in all, it was a confusing mess and a massive failure for the Ordnance Survey.

...But....

It's one of my favourite map series. It took me a little while to get used to it, but I find it very elegant, and so deeply of its time.

And the big, big reason it's now starting to appear as annual layers on SABRE Maps is this - it's the first One Inch series that featured those newfangled road numbers. And because they were produced either side of the great 1935 road numbering revision, we get to see in depth the changes that took place over the 1930s.

So, to celebrate this underrated map series, the first two layers have gone live today, including the very first Fifth Edition sheet published.

1931
144 Plymouth - Revision 9200/31

1932
137 Tavistock and Okehampton - Revision 5000/32
145 Torquay - Revision 5200/32
and two "district" sheets:
Aldershot North - Revision 4000/32
Aldershot South - Revision 4000/32

As usual, there's a Coverage Project page, so if you have any maps that we don't have - or a better copy, then please get in touch!
Steven

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From the SABRE Wiki: SABRE Maps/Fifth Edition coverage project#Progress by every sheet ever printed :
5th Edition cover.jpg

This project is to provide online coverage of the OS One Inch Fifth Edition Maps. Because only maps covering the southern parts of England were published, it's not possible to offer whole-GB coverage.


Do one, more or all of the below!

  • Go and get some maps. Fifth Edition One Inch maps were not very popular at the time, and come in two types - Relief and non-Relief, which can be told apart by a combination of the text
... Read More

Ross Spur
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Re: OS One Inch Fifth Edition

Post by Ross Spur » Sat Oct 03, 2020 11:21

Pleasant looking maps, as you say, and thanks for putting them on. Nice to see a Seaplane station shown (Plymouth).

Not much in the way of new roads on those editions at that stage. Buckfastleigh bypass is the main one from 1927. Bickington bypass is shown on an 1886 map, as is the Drybridge Cross diversion south of Dean Prior. The short diversion at Brent Mill dates from between 1906 and the 1932 map.

Is it the contour edition that is shown in the 5th Edition layer for sheet 145 Torquay? It looks clearer for viewing the roads, and is more like what we are accustomed to.

Ian

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Re: OS One Inch Fifth Edition

Post by Steven » Sat Oct 03, 2020 11:40

Ross Spur wrote:
Sat Oct 03, 2020 11:21
it the contour edition that is shown in the 5th Edition layer for sheet 145 Torquay? It looks clearer for viewing the roads, and is more like what we are accustomed to.
Yes, it is - the vast majority on the 5th Edition layer are the later contour editions. They are clearer, but I find them a little less charming!
Steven

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Re: OS One Inch Fifth Edition

Post by Steven » Sat Oct 03, 2020 12:20

Ross Spur wrote:
Sat Oct 03, 2020 11:21
Not much in the way of new roads on those editions at that stage. Buckfastleigh bypass is the main one from 1927. Bickington bypass is shown on an 1886 map, as is the Drybridge Cross diversion south of Dean Prior. The short diversion at Brent Mill dates from between 1906 and the 1932 map.
There's also the Basingstoke Bypass under construction.
Steven

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Re: OS One Inch Fifth Edition

Post by Steven » Sat Oct 10, 2020 11:28

More Fifth Edition mapping goodness has been uploaded to SABRE Maps and released today:

1933
113 (Reading and Newbury) revision 4700/33
118 (Barnstaple) revision 4600/33
123 (Winchester and Basingstoke) revision 3500/33
127 (Bideford and Bude) revision 3200/33
128 (Tiverton) revision 2600/33
138 (Exeter) revision 5200/33

1934
128 (Tiverton) revision 1000/34
136 (Bodmin) revision 1000/34
137 (Tavistock and Okehampton) revision 1000/34
143 (Truro and St Austell) revision 5500/34

My favourite thing I think is that if you look really, really carefully at Winchester on the 1933 layer, you can see the first signs of construction on the Winchester Bypass. Anyone else spot it?
Steven

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Re: OS One Inch Fifth Edition

Post by Chris5156 » Sat Oct 10, 2020 12:50

Steven wrote:
Sat Oct 10, 2020 11:28
My favourite thing I think is that if you look really, really carefully at Winchester on the 1933 layer, you can see the first signs of construction on the Winchester Bypass. Anyone else spot it?
That's some close attention to detail! Yes - on the A272?

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Re: OS One Inch Fifth Edition

Post by Ross Spur » Sat Oct 10, 2020 18:17

I wouldn't have spotted that. Reports state that all works on the Winchester Bypass were postponed in October 1931 due to the National financial crisis apart from the bridges over the Petersfield Road and under Alresford Road (and intervening work) which were already committed to.

Aside from that, I'm surprised by the frequency of revisions for the Fifth Edition maps.

Ian

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Re: OS One Inch Fifth Edition

Post by Chris5156 » Mon Oct 12, 2020 14:48

In a similar vein I'm very much enjoying the 1932 layer, which shows the A3 Guildford and Godalming Bypass as a dashed line almost in its entirety, and makes very clear where the new bypass borrowed bits of existing road!

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Re: OS One Inch Fifth Edition

Post by Steven » Tue Oct 13, 2020 11:25

The more you look, the more you find.

I've just spotted the first part of the Exeter Bypass under construction on the 1933 layer. It's such a shame that the Fifth Edition didn't go GB-wide...
Steven

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Re: OS One Inch Fifth Edition

Post by Ross Spur » Tue Oct 13, 2020 15:09

Or not find in this case ... Ashburton Bypass opened on 17 June 1933 but there is no trace on the 1933 layer for the Exeter map. It is on the Torquay map in the Fifth Edition layer though, probably a later year.

Maybe work on the Ashburton Bypass had started after the survey but the larger scheme of the Exeter Bypass had started before? Does the revision detail on the map help?

Ian

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Re: OS One Inch Fifth Edition

Post by Steven » Mon Oct 19, 2020 14:10

The 1935 layer has now been released, and the maps we have available on that layer are mostly focussed around London and the area to the north with parts of Hertfordshire and Bedfordshire being included.

The specific maps available are:

Sheet 95 (Luton) revision 3035
Sheet 96 (Hertford and Saffron Walden) revision 3335
Sheet 106 (NW London and Watford) revision 3035
Sheet 107 (NE London and Epping Forest) revision 3035
Sheet 115 (SE London) revision 6035
Sheet 119 (Exmoor) revision 4035
Sheet 146 (Land's End and Lizard) revision 5035
Steven

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Re: OS One Inch Fifth Edition

Post by Steven » Sun Oct 25, 2020 08:20

And onto 1936, where we have the following sheets added:

96 Hertford and Saffron Walden Revision 4036
106 NW London and Watford Revision 6036
107 London and Epping Forest Revision 6036
108 Chelmsford and Southend Revision 8036
113 Reading and Newbury Revision 4036
114 SW London and Windsor Revision 6036
118 Barnstaple Revision 3036
123 Winchester and Basingstoke Revision 3036
125 Reigate and Tunbridge Wells Revision 6536
127 Bideford and Bude Revision 4036
128 Tiverton Revision 4036
136 Bodmin Revision 4036
138 Exeter Revision 4536
144 Plymouth Revision 4536
145 Torquay Revision 5036
District map Dartmoor Revision 5036

We're now later than the 1935 Road Numbering Revision, so the A42 no longer travels north from Reading and so on.

That unused bridge waiting for the Winchester Bypass is still sat there, the Exeter Bypass is now open, and this place is in its heyday. And on an absolutely non-roads front, the Seaplane station near Plymouth seems to be still operating quite happily.
Ross Spur wrote:
Tue Oct 13, 2020 15:09
Or not find in this case ... Ashburton Bypass opened on 17 June 1933 but there is no trace on the 1933 layer for the Exeter map. It is on the Torquay map in the Fifth Edition layer though, probably a later year.
And ta-da! It's there on the 1936 layer.
Steven

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Re: OS One Inch Fifth Edition

Post by Ross Spur » Sun Oct 25, 2020 20:35

Another great selection of maps, thanks.

Western Avenue (now A40) has had a 2.5 mile extension since the Popular map - from A4127 at Greenford to the Ruislip Road, by Northolt Aerodrome. Also spotted a short bypass at Willand on A38.

Ian

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Re: OS One Inch Fifth Edition

Post by Steven » Sun Nov 01, 2020 06:43

And time marches ever-onwards, so the following maps are now available from 1937.

106 NW London and Watford Revision 8037
111 Bristol and Bath Revision 6037
114 London Revision 10037
124 Guildford Revision 4037
125 Reigate and Tunbridge Wells Revision 4037
129 Taunton and Minehead Revision 4037
130 Shaftesbury and Wells Revision 5037
139 Sidmouth and Lyme Regis Revision 6037
140 Bournemouth and Weymouth Revision 8037
141 Southampton Portsmouth and Isle of Wight Revision 8037
143 Truro and St Austell Revision 6037
146 Land's End and Lizard Revision 6037
District map Isles of Scilly Revision 2037

There's quite a few fun things to look at on here - for example, the Guildford and Godalming Bypass as discussed upthread is now open.
Steven

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Re: OS One Inch Fifth Edition

Post by Ross Spur » Sat Nov 07, 2020 08:28

N.W. London and Watford sheet 106 for 1936 does not show the 1935 Road Numbering revision for:

A409 extended from A41 Busheyheath to A500 Watford bypass
A32 at Marlow becoming A4155

They appear on the 1937 map, hence the quick revision.

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Re: OS One Inch Fifth Edition

Post by Steven » Sat Nov 07, 2020 08:29

And now, a bunch of maps from 1938.

Sheet 94 (Oxford) Revision 6038
Sheet 95 (St. Albans) Revision 80/38
Sheet 102 (Bristol and Newport) Revision 5038
Sheet 112 (Swindon and Devizes) Revision 50/38
Sheet 125 (Reigate and Tunbridge Wells) Revision 6038 M38 R37
Sheet 131 (Salisbury and Winchester) Revision 5038
Sheet 141 (Southampton Portsmouth and Isle of Wight) Revision 10038 M38 R37
Sheet 145 (Torquay) Revision 6038 M37 R37
District map (Dartmoor) Revision M37 R37 4038

There's absolutely loads to see here. My favourites (so far) are work continuing on the Winchester Bypass - and yes, you can see more than a single bridge now. There's also the Sutton Scotney Bypass under construction, and the newly opened Havant Northern and Cadnam Bypasses, plus further changes going on at Filton..
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Re: OS One Inch Fifth Edition

Post by Steven » Sat Nov 21, 2020 08:00

And finally we reach the end of the 1930s with the new 1939 layer uploaded today.

Included are:
106 NW London and Watford Revision 8039 M39 R38
113 Reading and Newbury Revision 6039
132 Guildford and Petersfield Revision 6039
140 Bournemouth and Weymouth Revision 8039 M39 R39
142 Brighton and Chichester Revision 6039
143 Truro and St Austell Revision 6039 M39 R39

There were four further Fifth Edition maps published in 1940 and 1941, but unfortunately we don't have any of those sat in the pipeline at the moment (and I don't have any in my personal collection either). So that means that, for now, that's all the Fifth Edition mapping we have available to us for display.

If you have some revisions that we do not, then please consider donating map scans so that we can all enjoy further mapping in this series.

Full details on the maps we have online, and how to find the print/revision codes on any maps in your collections, please see The Fifth Edition Coverage Project article.
Steven

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From the SABRE Wiki: SABRE Maps/Fifth Edition coverage project :
5th Edition cover.jpg

This project is to provide online coverage of the OS One Inch Fifth Edition Maps. Because only maps covering the southern parts of England were published, it's not possible to offer whole-GB coverage.


Do one, more or all of the below!

  • Go and get some maps. Fifth Edition One Inch maps were not very popular at the time, and come in two types - Relief and non-Relief, which can be told apart by a combination of the text
... Read More

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