somewhere Microbe The room magnetic ruler for whiteboard Duty muscle There
Magnetic Level Whiteboard Ruler - 40cm | White board, Ruler, Magnets
Amazon.com: LEARNING ADVANTAGE Magnetic Dry Erase Straight Edge - 24” - Jumbo Teaching Ruler - Measurement Tool for Whiteboards and Chalkboards : Toys & Games
Uxcell 3pcs Whiteboard Magnetic Ruler 29cm Metric Blackboard Straight Rulers Office Measuring Tools, Yellow Deep Blue - Walmart.com
Helix Magnetic Whiteboard Ruler. Perfect for the school classroom, library and office use
Magnetic Ruler Whiteboard Metric 1m – EDSCO
Helix Magnetic Whiteboard Ruler. Perfect for the school classroom, library and office use
I put adhesive magnets on the back of a cheap square ruler from the dollar store to use in drafting on my magnetic whiteboard. Niche necessity, but thought I'd share : r/lifehacks