with a spring projection 56 adapted for mounting thereon of a biasing spring 58 and a second end formed with a securing portion 57 adapted to be receive within a securing groove r of the static member 30 the entire securing mechanism 50 is adapted to be received within the working member 40 in particular the base plate 52 is received within the gap g between the portions 46 and 48 and the pulling member 54 is received within the aperture 45 a thereby preventing the base plate 52 from disengaging from the working member 40 the working member 40 is also fitted with a pulling ring 49 adapted for more convenient application of force against the biasing spring 58 in assembly the second unit 10 is welded via surface 11 thereof to the body to be protected b at a predetermined location corresponding to the desired future location of the armor element a the first unit 20 is bolted to the side a s of the armor element a using bolts passing through the attachment holes 36 a and 36 b when mounting the armor element a onto the body to be protected b the working member 40 is transverse to the static member 30 the armor element a is then positioned so on the body to be protected b that the contact surfaces 16 a 16 b are received within the respective nooks 35 a 35 b so as to align the armor element a with the body to be protected b once positioned the working member 40 is pivoted.