A non-destructive inspection device (10; 210; 310) for inspecting a feature of a structure, the inspection (10; 210; 310) device comprising: an actuating portion (12; 212; 312) having a first magnet (20, 22; 220, 222; 320) and a second magnet (20, 22, 220, 222), wherein the actuating portion (12; 212; 312) is structured for placement on a first surface of the structure such that the actuating portion (12; 212; 312) is movable relative to the structure; and a first inspecting portion (14; 214; 314) having an inspection sensor (50; 250; 350) and at least one magnet (24, 26; 324), and a second inspecting portion (16; 216) having a second inspection sensor (52; 252) and at least one magnet, wherein the first inspecting portion (14; 214; 314) and the second inspecting portion (16; 216) are structured for positioning on a surface (34, 36) of the structure opposite the first surface such that the feature of the structure to be inspected is located between the first inspecting portion (14; 214) and the second inspecting portion (16; 216) and such that the first inspecting portion (14; 214; 314) and the second inspecting portion (16; 216) are magnetically coupled to the actuating portion (12; 212; 312) so that movement of the actuating portion (12; 212; 312) causes the first inspecting portion (14; 214; 314) and the second inspecting portion (16; 216) to move in concert with the actuating portion (12; 212; 312) without the first inspecting portion (14; 214; 314) and the second inspecting portion (16; 216) directly contacting the actuating portion (12; 212; 312), wherein the first inspecting portion (14; 214) and the second inspecting portion (16; 216) are in a generally fixed relative position with respect to each other when each is magnetically coupled to the actuating portion (12; 212). an actuating portion (12; 212; 312) having a first magnet (20, 22; 220, 222; 320) and a second magnet (20, 22, 220, 222), wherein the actuating portion (12; 212; 312) is structured for placement on a first surface of the structure such that the actuating portion (12; 212; 312) is movable relative to the structure; and a first inspecting portion (14; 214; 314) having an inspection sensor (50; 250; 350) and at least one magnet (24, 26; 324), and a second inspecting portion (16; 216) having a second inspection sensor (52; 252) and at least one magnet, wherein the first inspecting portion (14; 214; 314) and the second inspecting portion (16; 216) are structured for positioning on a surface (34, 36) of the structure opposite the first surface such that the feature of the structure to be inspected is located between the first inspecting portion (14; 214) and the second inspecting portion (16; 216) and such that the first inspecting portion (14; 214; 314) and the second inspecting portion (16; 216) are magnetically coupled to the actuating portion (12; 212; 312) so that movement of the actuating portion (12; 212; 312) causes the first inspecting portion (14; 214; 314) and the second inspecting portion (16; 216) to move in concert with the actuating portion (12; 212; 312) without the first inspecting portion (14; 214; 314) and the second inspecting portion (16; 216) directly contacting the actuating portion (12; 212; 312), wherein the first inspecting portion (14; 214) and the second inspecting portion (16; 216) are in a generally fixed relative position with respect to each other when each is magnetically coupled to the actuating portion (12; 212).