A 5cm ruler key chain that attaches with your keys that easily fits in your pocket

material: PETG for better strength (or PLA)

layer height: 0.2mm

for better strength use 100% infill

if you want the numbers to be a different color , start with black (or any color of your choice) and change the filament after 1mm to a different color.

Print time: 25 mins at 50mm/s

V2 Ruler: Added 0.5 cm marks