Mars triangular reduction scale ruler Version 2 - a precision instrument for technical drawing at scaleThe Staedtler Mars 561 98-2BK is a triangular reduction scale ruler in Version 2 scale configuration, providing a high-precision 3-sided scale ruler for architects, engineers and technical draftspeople who need to measure and draw accurately at reduced scale ratios.A triangular scale ruler carries 6 different scale graduations across its three faces - allowing the user to switch between multiple drawing scales (such as 1:20, 1:25, 1:50, 1:75, 1:100, 1:125 in a typical engineering set) without changing instruments. Version 2 refers to the specific scale set engraved on this ruler, catering to particular professional disciplines and national drafting standards. Made from rigid black plastic with clearly legible laser-engraved scale markings. A precision tool for serious technical drawing and drafting. Explore the full Staedtler range, rulers and scales and craft supplies.
