Lo Ban AR: Ruler, Compass

A measuring toolkit for carpenters, builders, and anyone renovating a home. LO BAN RULER — AT TRUE SCALE Three rulers built from the original specifications: 52.2 cm, 42.9 cm and 38.8 cm. Enter a measurement and the app shows which segment it falls into on all three rulers at once. What makes it different: the scale on screen is drawn at true 1:1. One centimetre on screen is one centimetre in the world, computed from the physical size of the device in your hand. A calibration screen using a bank card lets you verify it yourself. Edge mode pushes the scale to the very edge of the display so you can lay an object against it. Two-step plus and minus buttons sit either side of the number field, with hold-to-repeat — no deleting and retyping a long number because you were off by a millimetre. HEADING COMPASS A multi-ring dial built after traditional instruments, read from the outer ring…