rēgŭla (noun F) : rego
* A straight piece of wood, ruler, rule (class.; cf.: norma, libella).
* Lit.: atque si id crederemus, non egeremus perpendiculis, non normis, non regulis, Cic. Fragm. ap. Non. 163, 2; cf. (with linea): perpendiculum, and norma,Vitr. 7, 3: materiam ad regulam et libellam exigere,Plin. 36, 25, 63, § 188; Col. 3, 13, 11 sq.: hoc cum regulā exploraveris aequale,Pall. 1, 9, 2.
* Transf.
* Trop., a rule, pattern, model, example (cf.: formula, praescriptio): fontem omnium bonorum in corpore esse: hanc normam, hanc regulam, hanc praescriptionem esse naturae,Cic. Ac. 2, 46, 140: regula, ad quam eorum dirigantur orationes, qui, etc.,id. Opt. Gen. 7 fin.; id. Fin. 1, 19, 63: regula, quā vera et falsa judicarentur,id. Brut. 41, 152: nos studia nostra nostrae naturae regulā metiamur,id. Off. 1, 31, 110: (lex est) juris atque injuriae regula,id. Leg. 1, 6, 19: regula totius philosophiae,id. Ac. 2, 9, 29; cf. id. N. D. 1, 16, 43: pravissima consuetudinis regula,id. Brut. 74, 258: mediocritatis regula,id. Off. 2, 17, 59: omnium una regula est,id. ib. 3, 31, 81: emendate loquendi regula,Quint. 1, 5, 1; so, loquendi,id. 1, 7, 1: sermonis,id. 1, 6, 44: morum,Mart. 11, 2, 3 et saep.: ad legem ac regulam compositum esse,Quint. 12, 10, 50; cf.: locuti sunt ad hanc regulam,id. 9, 4, 4: habeo regulam, ut talia visa vera judicem,Cic. Ac. 2, 18, 58: assit Regula, peccatis quae poenas irroget aequas,Hor. S. 1, 3, 118: secundam regulam nostram,Vulg. 2 Cor. 10, 15; cf. id. ib. v. 13, 16; id. Phil. 3, 16.—In plur. (only late Lat.), Gai. Inst. 3, § 142; Cod. Just. 1, 17, 2, § 10; Arn. 1, n. 59: regulae credendi,Aug. Doctr. Chr. 4, 9 init.
* A measuringrod: in regulā, in pondere,Vulg. Lev. 19, 35.
* In mechanics.
* Plur., the two cheeks on each side of the channel in which the dart of the catapult lay; also called bucculae, Vitr. 10, 12.
* The shank of a triglyph, Vitr. 4, 3.
* The disks of an oilpress: quod si regulis olea prematur, et praelum et suculam et regulas dominum parare oportere,Dig. 19, 2, 19, § 2.