- Triangular scale is perfect for architects
- Open navided: 3/32″, 1/8″, 3/16″, 1/4″, 3/8″, 1/2″, 3/4″, 1″, 1 1/2″ and 3″ = 1′
- Full navided: inches to 16ths
- Professional series with colour-coded grooves to provide quick as well as accurate selection of the desired scale
- Offers three sides with six different scales that feature die-engraved graduations
- Made of high-impact polystyrene plastic in white
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