A 2.6. Variations in thickness
The signs of the skin’s quality that mostly depend on the age of the animal.
It is easier to produce thin, ca 0.1 mm and thinner, parchment of uniform thickness if the skin of a young animal is selected for processing. The processing of both sides of an older animal’s skin in order to thin it requires much more effort, and is often unsuccessful. The damage and uneven thickness of the base material of historical parchments is usually caused by the mechanical processing and stretching during thinning of the skin. Parchment with variations in its thickness may later become quite stiff. Great differences in the thickness may result in the deformation of the parchment caused by the external environment.
Ürik TLA.230.1-iiib.25, 1482. a.
Paksuse kõikumine.
Pärgamendi valmistamisel saavutatud paksuse ühtlus üle pinna on pärgamendi valmistamise kvaliteedi tunnuseks. Lisaks paksuse mõõtmisele saab ka läbivas valguses paksuse ühtlust või ebaühtlust dokumenteerida.
The uniformity of the thickness achieved during the manufacture of parchment over the surface is a sign of the quality of the parchment manufacture. In addition to thickness measurement, thickness uniformity or unevenness can also be documented in transmitted light.
Ürik TLA.230.1.be_14/ii, 1561.a.
Paksuse kõikumine.
Paksuse suur ebaühtlus üle pärgamendi pinna võib põhjustada ajaloolistel pärgamentidel deformatsiooni. Deformatsioon pärgamendi servades on dokumenteeritud kaldvalguses.
Large inconsistencies in thickness across the parchment surface can cause historic parchments to warp. Deformation at the edges of the parchment is documented in oblique light.
Ürik TLA.230.1.be_14/ii, 1561.a.
Paksuse kõikumine.
Deformeerunud alade erinev paksus on hästi nähtav läbivas valguses.
The different thickness of the deformed areas is clearly visible in transmitted light.
TLA.230.1.BB_74/iv
Paksuse kõikumine.
Paksuse lokaalne ebaühtlus, mis on põhjustatud pindmise ala ebaühtlasest eemaldamisest.
Local thickness unevenness caused by uneven removal of the surface area.
Ürik TLA.230.1-ii.255, 1509. a.
Paksuse kõikumine.
Ühtlane paksus on dokumenteeritud läbivas valguses.
Uniform thickness is documented in transmitted light.
Ürik TLA.230.1-ii.255, 1509. a.
Paksuse kõikumine.
Paremal ülemises nurgas on pärgamendi paksus ligi 4 korda paksem pärgamendi keskmisest paksusest. Paksuse kõikumine ja degradeerumine on põhjustanud pärgamendi deformatsiooni.
In the upper right corner, the thickness of the parchment is almost 4 times thicker than the average thickness of the parchment. Variation in thickness and degradation have caused deformation of the parchment.
Ürik TLA.230.1-i.1211/a, 1725. a.
Paksuse kõikumine.
Ühtlane paksus on dokumenteeritud läbivas valguses.
Uniform thickness is documented in transmitted light.
Ürik TLA.230.1.cm10, 1433. a.
Paksuse kõikumine.
Pärgamendilehe ühtlane paksus on pärgamendi valmistamise kvaliteedi tunnuseks. Dokumenteeritud läbivas valguses.
The uniform thickness of the parchment sheet is a sign of the quality of the parchment making. Documented in transmitted light.
Ürik AM.115.3.41, 1803. a.
Paksuse kõikumine.
Läbivas valguses dokumenteeritud ebaühtlase paksusega pärgament.
Parchment of uneven thickness documented in transmitted light.
Ürik AM.115.2.21, 1733. a.
Paksuse kõikumine.
Suureformaadilise pärgamentdokumendi ühtlane paksus on dokumenteeritud läbivas valguses.
The uniform thickness of a large-format parchment document is documented in transmitted light.
Ürik AM.115.2.1, 1647. a.
Rooste. Rebaseplekk e. foksing
Rebaseplekid läbivas valguses. Plekid on väikese läbimõõduga, sageli kogumitena esinevad, punakaspruunid plekid, mille tekkepõhjuseks peetakse metalliühendite, bioloogiliste mõjutuste ja loomse pigmendi, melanin, koosmõju.
Foxing spots in transmitted light. Spots are reddish-brown spots with a small diameter, often occurring in clusters, which are considered to be caused by a combination of metal compounds, biological influences and animal pigment, melanin.
Foxing spots in transmitted light. Spots are reddish-brown spots with a small diameter, often occurring in clusters, which are considered to be caused by a combination of metal compounds, biological influences and animal pigment, melanin.
Ürik AM.115.2.21, 1733. a.
Paksuse kõikumine.
Ühtlane paksus on dokumenteeritud läbivas valguses.
Uniform thickness is documented in transmitted light.