Maps of Cambrian Mountains
Aberystwyth, Sheet 16 - Bartholomew's "Half Inch to the Mile Maps" of England & Wales
1 : 126720 Topographic maps Bartholomew, John George John Bartholomew & Co
Montgomeria comitatus et comitatus Mervinia
1 Karte : Kupferdruck ; 37 x 48 cm Blaeu Joan Blaeu
Aberystwyth - OS One-Inch Map
1 : 63360 Topographic maps Ordnance Survey Ordnance Survey
Montgomery and Llandrindod Wells - OS One-Inch Map
1 : 63360 Topographic maps Ordnance Survey Ordnance Survey
Cader Idris
1 : 31680 This plan of south Snowdonia runs from Cardigan Bay inland to the Cader Idris. Types of land use are indistinguishable in this drawing as no clear symbols have been used. The purple 'Ordnance Survey Manuscript Store' stamp at the top right margin is dated 9th April 1881. Dawson, Robert
Llanerfyl
1 : 31680 The formal title of the drawing states that Robert Dawson supervised the surveyor. Dawson, one of the best surveyors and draughtsmen, was employed on the Ordnance Survey for over forty years, working also as an instructor. The scale of the drawing is noted and the area of the land recorded as 165.4742 square miles. A triangulation diagram appears on the reverse. This enabled draughtsmen to plot the exact location of topographical features. Colour washes depicting relief are combined with numerical annotations ('spot heights') in black ink indicating the heights of hills. The draughtsman has also distinguished between the representation of coniferous and deciduous trees. Hall, Joseph
Barmouth (Hills) - OS One-Inch Revised New Series
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Barmouth (Outline) - OS One-Inch Revised New Series
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Aberystwyth (Outline) - OS One-Inch Revised New Series
1 : 63360 Topographic maps Ordnance Survey Ordnance Survey
Aberystwyth (Hills) - OS One-Inch Revised New Series
1 : 63360 Topographic maps Ordnance Survey Ordnance Survey
Dinas-Mawddwy (Hills) - OS One-Inch Revised New Series
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Dinas-Mawddwy (Outline) - OS One-Inch Revised New Series
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Llanidloes (Hills) - OS One-Inch Revised New Series
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Llanidloes (Outline) - OS One-Inch Revised New Series
1 : 63360 Topographic maps Ordnance Survey Ordnance Survey
Newtown
1 : 31680 The River Severn Valley,features,runs,from left to right on this plan of part of mid- Wales. With its source high on the Cumbrian Mountains, the river flows through,a narrow rocky channel in its upper course, becoming wider and deeper in its middle course and its valley flatter. Budgen, Thomas
Plynlimmon
This drawing covers the boundary between the counties of Cardiganshire and Montgomeryshire. The border is marked as a red pecked line, following the course of the River Dovey for much of its length. Archaeological sites are noted in gothic script, an obligatory feature after 1816. A dot within a red triangle represents a trigonometric station, from which the surveyor took angular measurements in order to plot the location of topographical features. Giles, John C
Llanidloes
1 : 31680 In this partly finished plan of central Wales, colour washes depicting relief are combined with numerical annotations in red ink to describe the contours and height of the land. An area calculation table survives in black ink at the bottom margin, the area mapped being recorded as 52.5502 square miles. Archaeological details are named in gothic lettering. Budgen, Thomas Jr.
Hafod, Llanidloes
1 : 31680 .This plan of the,Ystwyth valley in the Cambrian Mountains is formally titled. The scale of the drawing is noted and the area of the land recorded,as 183.0453 square miles. Archaeological sites are named in gothic script. Colour washes depicting relief are combined with numerical annotations ('spot heights'), in red and black ink, indicating the height of the hills. The altitudes in red ink,are trigonometrically ascertained; those in black are estimated. Dawson, Robert
Aberystwyth 13
1 : 31680 This plan of Cardigan Bay extends from Aberystwyth at the top left to Llansantffraid at the bottom left. A stretch of the Cambrian Mountains and the peat bogs of Cors-goch Glan Teifi are depicted further inland. The map's scale is noted beneath the formal title and the area of the land recorded as 117.8114 square miles. The circular hole in the top right-hand corner indicates that an 'Ordnance Office Copy' blind stamp has been removed from the sheet. Archaeological sites are named in gothic script. Colour washes depicting relief are combined with numerical annotations in black ink. Dawson, Robert
Rhyader (Outline) - OS One-Inch Revised New Series
1 : 63360 Topographic maps Ordnance Survey Ordnance Survey
Rhyader (Hills) - OS One-Inch Revised New Series
1 : 63360 Topographic maps Ordnance Survey Ordnance Survey
Llanilar (Outline) - OS One-Inch Revised New Series
1 : 63360 Topographic maps Ordnance Survey Ordnance Survey
Llanilar (Hills) - OS One-Inch Revised New Series
1 : 63360 Topographic maps Ordnance Survey Ordnance Survey
Machynlleth
1 : 31680 .A triangulation diagram appears on the reverse of this drawing. This enabled the draughtsman to plot features of the landscape precisely. There is no shading to describe relief, suggesting the drawing is an intermediate,version,rather than,the finished map. Trigonometrical stations are marked by a dot within a triangle., Some pencil lines can be seen radiating from these, indicating the angular measurements taken from these points., Hughes, Herbert J
Abermaw
1 : 31680 This is the original protraction for a plan of Snowdonia, running from Barmouth Bay inland to Llanegryn. On his Welsh drawings, Dawson introduced the convention of 'relative command': the indication of the relative height of the hills by numbers - Hill 3 being higher than Hill 2, for example. Brushwork interlining ('hachures') and ink washes further describe relief. Pencil rays intersect across the map, evidence of measurements taken by the surveyor between fixed triangulation points. Dawson, Robert
Aberystwyth 4
1 : 31680 .The formal title of the drawing states that the survey was conducted under the supervision of Robert Dawson. One of the best surveyors and draughtsmen of the day, Dawson was employed on the Ordnance Survey for over forty years, also working as an instructor. The scale of the drawing is noted and the area of the land recorded as 44.6825 square miles in total. Archaeological sites are named in gothic script. Colour washes depicting relief are combined with numerical annotations or spot heights giving the heights of the hills. Those in red ink indicate trigonometrically ascertained altitudes while those in black are estimated. The paper carries a watermark from the James Whatman Turkey Mill in Kent dated 1819. Budgen, Thomas Jr.
Glasllyn
1 : 31680 This drawing is formally titled. The scale is recorded and the area of land surveyed noted in square miles. A triangulation diagram appears on the reverse of the drawing. Trigonometrical points are marked by a dot within a triangle.,From these,points, the surveyor took angular measurements to plot prominent features of the landscape. Lack of shading to,indicate relief suggests that this is an intermediate,drawing rather than,the finished version. Faint pencil lines form a border around the plan. The top-right corner of the border is marked 'Sheet Edge' to identify,the intended borders of the finished drawing. Giles, John C
Towyn
1 : 31680 The lack of shading to describe relief indicates that this is an outline drawing: the half-way stage between the original projection and the finished drawing. Towyn appears towards the bottom left of the surveyed area. Individual buildings are depicted in red ink, indicating they are made of stone. Trigonometrical stations are marked by a dot within a red triangle. At Taren Gadian, pencil lines can be seen radiating from the trigonometrical station, indicating the angular measurements the surveyor took from these points. A triangulation diagram on the reverse of the drawing enabled the draughtsman to plot topographical features precisely. Durrant , William R
SH61 & Parts of SH51 - OS 1:25,000 Provisional Series Map
1 : 25000 Topographic maps Ordnance Survey Ordnance Survey
