Stanley Classic Box Level 2 Vials Yellow (40cm/16”) STHT43102-8

Product details :
Solid Block Center vial magnified for easier reading and accurate to 0.0005in/in & 0.5mm/m
Enlarged plumb vials over 25% larger than vials for easy reading
Plumb vials feature clear covers for protection and easy cleaning
For most home DIY work
Great for both home and professional use.
Value for money
The simple mechanism provides a reliable function
Long, lasting and durable