Mason checking plumb line of house wall being made from aerated concrete blocks Stock Photo - Alamy

Mason checking plumb line of house wall being made from aerated autoclaved concrete blocks Stock Photo - Alamy

Aerated concrete block hi-res stock photography and images - Alamy

Aerated concrete block hi-res stock photography and images - Alamy

Aerated concrete block hi-res stock photography and images - Alamy

Checking that the concrete block is vertical hi-res stock photography and images - Alamy

Mason checking plumb line of house wall being made from aerated autoclaved concrete blocks Stock Photo - Alamy

Autoclaved aerated concrete blocks hi-res stock photography and images - Alamy

Autoclaved aerated concrete blocks hi-res stock photography and images - Alamy

466 Building Plumb Line Stock Photos - Free & Royalty-Free Stock Photos from Dreamstime

Block mason hi-res stock photography and images - Page 18 - Alamy

The mason masonry a wall of concrete blocks on the house Stock Photo - Alamy

Plumb line wall hi-res stock photography and images - Alamy

Autoclaved aerated concrete blocks hi-res stock photography and images - Alamy