SK11 Aluminum BOX level 450mm No magnet The bottom is flat so it can be used for leveling work on dirt floors SABL45 Made in Japan (SK11) etc.

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Vial: 4-line acrylic vial (vertical/horizontal) Bubble color: Green Sensitivity: 0.50mm/m=0.0286 degree Accuracy: ±2.5mm/m=within ±0.0859 degrees Frame: Aluminum alloy extrusion hardening treatment, Vial tube: Acrylic resin