Main Discussion Area > English Warbow
Weapons of Warre: The Ordnance of the Mary Rose
CraigMBeckett:
It seems I owe the Mary Rose Trust an apology, they appear to have provided all the bow information in the form of scans of their data sheets in pdf format in a dvd that is placed in the back cover sheet of volume 2. Only found the dvd because my son nocked the book off the arm of the settee where I had temporarily placed it and when it fell it opened at the dvd, a quick look through the index shows that it contained longbow data files in pdf format. Have had a quick loo at a couple and see records of the measurement of the bows at the centre and at points 100 mm apart along each limb, they seem to give width depth at the nock but I cannot see a nocg to nock or centre to nock measurement, but as the first two records are completely different to each other maybe later entries have such info. The records do seem to show the length of the nock stain but not sure they give the position of the nock groove.
Will have to study the info further.
Craig.
CraigMBeckett:
--- Quote from: Ian. on August 01, 2011, 01:58:27 pm ---That is strange, there are many bows its likely that people for the most part are picking up different bows each time. was it the MR who published the first table of measurements and have you got a link to the artifact data base.
--- End quote ---
Hi Ian,
Yes its the trusts own database. Address follows.
http://www.maryrose.org/database/mary_rose_archive.html
just type into the search criteria the word longbow, click on "find first" and it will take you to the first record with longbow in it. Which is record no 2256, for artifact No. 79A0614 which is an incomplete /broken yew bow some 330 mm long.
Doubt if they were picking up different bows as they seem to have painted (?? )/attached an ID number on each and every artifact.
Craig
Ian.:
Thanks for that Craig.
Phil Rees:
What I can't understand is why the M.R. trust didn't have the bows 3D laser scanned. It would have taken about 10 seconds per bow and would reveal all cross sectional and linea dimentions in all three (x, y and z) co-ordinate axes down to +/- 15 microns.
CraigMBeckett:
--- Quote from: Horace Ford on August 06, 2011, 08:38:51 pm ---What I can't understand is why the M.R. trust didn't have the bows 3D laser scanned. It would have taken about 10 seconds per bow and would reveal all cross sectional and linea dimentions in all three (x, y and z) co-ordinate axes down to +/- 15 microns.
--- End quote ---
Other than cost its probably because they believe they have all the data they require on the bows. The booking sheets I mentioned as being in the DVD appear to be the original sheets of measurement taken back when either the bows were first recovered or after they had stopped moving dimensionally when stored in Hardy's cellar.
Some of the sheets are missing data that was not taken at the time others it appears the data could not be taken because of damage. so overall of the 177 bows and bow bits mentioned in the Archive the DVD contains data on 124 of them. Of this 124 there are only 83 bows that are both complete and for which the DVD contains the full set of dimensions, Over all length, width and depth at the centre, width and depth at points 100mm apart along both limbs, width and depth at the horn stain mark for each limb and the length of the horn stain. Note they do not contain data on the points of change of shape of the bows nor the position of the nock grooves or the circumference /perimeter of each point where the width and depth are take. Of the remaining 41 bows in the DVD the majority are only missing one or 2 sets of data, usually to do with the nock area where due to damage no discernible horn stain can be seen, a few others are broken, most of which the archivists have made an attempt to estimate the length of the break. So by judiciously :) selecting say the measurements of the other nock on the bow as being the same as those at the missing end and by adding the estimated missing length etc on can get a fair approximation of the dimensions of a lot of them, unfortunately 6 of the bows are either missing limbs or complete sets of data.
For those interested the following is the AVERAGE if the 83 complete bows.
Length (measured along the convex side of the bow to get the max length from tip to tip) 1,968mm, 77 1/2"
Length of horn staining 45.9mm 1.803" upper limb 44.4mm 1.754" lower limb
Centre Width 39.5mm 1.417" Depth 33.2mm 1.297"
Lower Limb W mm D mm W in. D in
@ 100mm 35.7 32.4 1.406 1.279
@ 200mm 35.0 31.4 1.367 1.238
@ 300mm 33.8 30.0 1.331 1.182
@ 400mm 32.4 28.7 1.275 1.136
@ 500mm 30.6 27.1 1.206 1.071
@ 600mm 28.3 25.5 1.117 1.005
@ 700mm 25.4 23.4 1.002 0.922
@ 800mm 21.5 20.6 0.836 0.809
@ 900mm 16.0 16.3 0.632 0.643
@ Horn Stain 12.75 13.22 0.503 0.517
Upper Limb W mm D mm W in. D in
@ 100mm 35.3 31.7 1.389 1.250
@ 200mm 34.4 30.6 1.353 1.204
@ 300mm 33.2 29.3 1.308 1.156
@ 400mm 31.6 27.9 1.248 1.103
@ 500mm 29.9 26.6 1.179 1.049
@ 600mm 27.6 24.8 1.092 0.980
@ 700mm 24.9 22.6 0.980 0.894
@ 800mm 21.1 20.0 0.832 0.789
@ 900mm 15.7 15.7 0.614 0.618
@ Horn Stain 12.60 13.19 0.497 0.521
The two sets of readings, metric and imperial were taken by the archivists so they do not necessarily compute the same, however on about 4 bows the imperial readings were absent and so were calculated, there mat also have been the odd reading missing from other bows and if so the other, metric or imperial reading was used to calculate the missing . Please also note that in the 83 bows 3 no were not long enough to have readings at 900 mm in the upper limb and 2 of them were not long enough to have readings at 900 mm in the lower limb , Please also note the choice of upper and lower limb in the 83 bows was made by the archivist, sometimes arbitrarily.
My word its a pain trying to get a table to align on here.
Craig.
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