| Subject | English | Spanish |
| math. | centimeter ruler | regla de centímetros |
| industr., construct., met. | cutter's table ruler | regla graduada |
| transp., tech. | distance ruler | aparato de medida del ancho de vía, plantilla de ancho de vía |
| transp., tech. | distance ruler | regla de escantillón |
| transp., tech. | distance ruler | calibre de vía |
| transp., tech. | distance ruler | regla de trocha |
| gen. | drawing rulers | reglas de dibujo |
| patents. | drawing squares and rulers | escuadras y reglas de dibujo |
| scient. | flat ruler | regla plana |
| scient. | hatching ruler | regla para sombrear |
| comp., MS | horizontal ruler | regla horizontal (A bar marked off in units of measure (such as inches) that is displayed across the top of the document window) |
| hobby, transp. | parallel ruler | paralelas |
| tech. | parallel rulers | reglas paralelas |
| IT, dat.proc. | ruler guide | regleta |
| comp., MS | ruler guide | guía de regla (A horizontal or vertical layout guide that can be aligned to any point on a ruler) |
| comp., MS | ruler guide marker | marcador de guía de regla (A marker in the ruler that aligns with the current guide position and enables users to add, edit, or delete a guide from within the ruler) |
| comp., MS | ruler mark | marca de regla (A mark on the vertical or horizontal ruler that shows a unit or subunit of the measurement unit that is used for the publication) |
| comp., MS | ruler origin | origen de la regla (The beginning or zero point of a horizontal or vertical ruler) |
| comp., MS | ruler subdivision | subdivisión de regla (The division between grid lines and between intervals of the ruler) |
| tech. | ruler without graduations | regla sin dividir |
| patents. | rulers and geometry sets | reglas y juegos de geometría |
| patents. | school supplies, namely fountain pens, pencils, erasers, pencil cases, pencil sharpeners, rulers, staplers, paperweights, notebooks, folders, ring binders, spiral notepads, book covers and bookmarks | material escolar, en concreto plumas, lápices, gomas de borrar, estuches de lápices, sacapuntas, reglas, grapadoras, pisapapeles, cuadernos, carpetas, clasificador de anillas, cuadernos de notas de espiral, forros para libros y señales para libros |
| transp., tech. | spacing ruler | calibre de vía |
| transp., tech. | spacing ruler | regla de escantillón |
| transp., tech. | spacing ruler | regla de trocha |
| transp., tech. | spacing ruler | aparato de medida del ancho de vía, plantilla de ancho de vía |
| scient. | square ruler | regla cuadrada |
| gen. | square rulers | cuadrados reglas |
| scient. | standard ruler | regla patrón |
| UN, afr. | "traditional rulers" | "dirigentes tradicionales" |
| comp., MS | vertical ruler | regla vertical (A bar displayed along the left side of a document window. You can use the vertical ruler to adjust the top and bottom page margins and the row height in tables) |
| comp. | view ruler | ver regla |