Etapa 1: capture a tela ou janela pressionando PrtScn ou Alt + PrtScn

Passo 2: Cole nesta página pressionando Ctrl + V

Etapa 3: clique em 2 pixels para obter o comprimento

Etapa 1: capture a tela ou janela pressionando ⌘ Command + ⇧ Shift + 3 ou ⌘ Command + ⇧ Shift + 4

Step 2: Paste in this page by pressing ⌘ Command+V

Step 3: Click on 2 pixels to get length

Step 1: Capture screen by pressing Home ▢+Hold / Power buttons

Step 2: Paste in this page by long tap and pressing Paste button.

Step 3: Click on 2 pixels to get length

Step 1: Capture screen by pressing Volume up + Power buttons

Step 2: Paste in this page by pressing Paste button.

Step 3: Click on 2 pixels to get length