"L'Ecluse du Canal St. Martin" is a wood engraving by Auguste Louis Lepère that depicts the lock mechanism of the Canal Saint Martin in Paris with precise linear detail characteristic of the medium. The work exemplifies Lepère's mastery of wood engraving, a technique that allows for fine tonal gradations through careful line work and cross hatching. As a subject of modern urban infrastructure, the print reflects the 19th century fascination with depicting contemporary industrial and engineering achievements.