. ▁Print ing ▁pl ates ▁are ▁produced ▁from ▁the ▁finished ▁scri be ▁sheets , ▁one ▁for ▁each ▁colour ▁of ▁the ▁map . ▁ ▁S cribe ▁tools ▁ ▁A ▁tri pod ▁or ▁t rol ley ▁arrangement ▁is ▁used ▁to ▁hold ▁the ▁scri be ▁st yl us . ▁A ▁st yl us ▁of ▁required ▁thick ness ▁is ▁set ▁in ▁the ▁t rol ley ▁and ▁the ▁surface ▁material ▁is ▁removed ▁by ▁applying ▁light ▁pressure ▁as ▁the ▁t rol ley ▁is ▁moved ▁over ▁the ▁image . ▁Care ▁must ▁be ▁taken ▁to ▁ensure ▁the ▁base ▁material ▁is ▁not ▁g oug ed ▁or ▁dist orted . ▁ ▁Either ▁a ▁round ▁point ▁or ▁ch is el ▁point ▁st yl us ▁may ▁be ▁used . ▁Ch is el ▁points ▁must ▁be ▁set ▁at ▁right ▁angles ▁to ▁the ▁direction ▁of ▁movement . ▁As ▁well ▁as ▁single ▁line ▁gra vers , ▁double ▁and ▁triple ▁lines ▁can ▁be ▁produced ▁with ▁double ▁and ▁triple ▁gra ver ▁st yl us . ▁Small ▁circles ▁can ▁be ▁produced ▁using ▁motor ised ▁versions ▁of ▁scri bing ▁tools , ▁and ▁symbols , ▁figures ▁etc ., ▁can ▁be ▁produced ▁using ▁pl astic ▁or ▁metal ▁templates . ▁ ▁Area ▁symbols ▁ ▁‘ Pe el co at ’ ▁is ▁used ▁to ▁produce ▁a ▁negative ▁of ▁an ▁area ▁of ▁detail ▁such ▁as ▁a ▁lake ▁or ▁forest . ▁The ▁border ▁of ▁the ▁area ▁is ▁cut ▁or ▁s cribed ▁on ▁the ▁pe el co at ▁and ▁the ▁coat ▁of ▁the ▁sheet ▁within ▁the ▁area ▁is ▁pe e led ▁off ▁to ▁produce ▁a ▁negative ▁image . ▁