Khối đo kiểm chuẩn (Calibration stack) dạng hình vuông bậc thang

hysical reference print for rulers, layer height, and small embossed text. Five hollow or solid stepped square levels, each 10 mm tall, stacked largest to smallest: 75, 65, 55, 45, and 35 mm on a side.

Side faces: running cumulative height labels from the base — 10, 20, 30, 40, and 50 mm — one value per tier so you can read total stack height at a glance.

Top surface: six embossed characters (1 2 3 4 5 6) where digit “1” is 1 mm tall, “2” is 2 mm, through “6” is 6 mm, so you can judge minimum readable / printable character height for your printer and filament.

Plan view (each tier): dimension graphics with arrows across the square showing that level’s edge length (75 mm on the bottom tier, stepping down to 35 mm on the top).

Handy for checking dimensional accuracy, Z calibration, embossing depth, and font size on one compact desk model.