PhoxLaser
Teclulu 18*75 100mW Green (532nm) Cross-Line Generator Laser Module/5V-12V
You will find that the 6 inch dimension makes it simple to align with rulers or tape measures.
Teclulu 18*75 100mW Green (532nm) Dot Laser Module/5V-12V
This product shows the type as does not apply, which is fine.