e+m Mini Triangle Ruler

Miniature wooden ruler marked in both inches and centimeters.

Scale ruler - Wikipedia

Purple Ruler

Carved from natural beech, this small desktop organizer packs a big punch.

e+m Office Rock Desk Organizer

Mr. Pen- 3 Pc Large Triangular Ruler Set, Triangular Scale, 11 Inch 30/60 and 8 Inch 45/90 Triangles

Machine Quilting with Rulers - Basic Ruler Quilting Kit for Beginners –

4 Pieces Aluminum Triangle Ruler Set Mini Ruler Custom Geometry Kit Drawing Tools

Orders of magnitude (length) - Wikipedia

Mini metal Rulex triangular 150mm 15cm scale ruler. Silver aluminium.

Mini Hexagons & Triangle Ruler ITMTQ 882238 Wm E Wrights - 70659931345

Stripology Ruler product review - The Crafty Quilter