drafting instrumentsparallel rulesarcographsconographscentrolineadsdrafting compassesdrafting pensdrafting setsdrafting templatesdrafting trianglesdrafting wheelsdrawing boardsdrawing styluseseccentrolineadscycloidographscymographshyalographsgraduatorshelicographslettering templatespencil compassesodontographsrhumboscopessectographswing compassesruling enginesdrafting instrument casesdrafting equipmentdrafting instrument