Description

• Dual Functionality:

  Each pen serves as both a writing instrument and a straight-edge ruler, with measurement markings along its barrel.
• Design:

  They have a clear, transparent cap and a colored barrel that incorporates the ruler markings.
• Variety:

  The image shows five pens in different colors: orange, yellow, clear/white, blue, and green.
• Portability:

  Their pen-like form factor makes them easily portable and convenient for quick measurements or drawing straight lines.