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The sign shaped L symbolizes the stonemason's square.
The sign shaped of inverted V symbolizes the stonemason's compass.
The stonemason's peak is not abundant. It is represented realistically.
Churches:
Santa María de la Huerta (Soria), Santiago de Agüero (Huesca), Nuestra Señora de la Gloria de Casbas (Huesca), San Zoilo (Carrión de los Condes), San Juan de Uncastillo (Zaragoza), San Miguel de Biota (Zaragoza), Puilampa (Zaragoza), El Salvador de Sepúlveda (Segovia), Santes Creus (Tarragona), san Miguel de Fuentidueña (Segovia).
Read more in The stonemason’s signs in the Romanesque churches in Spain.