Review on 📏 Inch Wood Rulers with Clear Divisions for Hand2Mind by Mark Adlesh

I have been teaching math with them in schools for 30 years. Young children can easily read and understand 1/4 inch fractions which are clearly marked. The illegible 1/16 inch standard plastic school rulers that have been used in most classrooms for decades are useless. The only quibble is that the ends aren't always flush with the zero marks - I sand gently on a built in disc sander to fix the imperfections.