Master Lock Co. has introduced two new resettable combination padlocks: a solid brass lock with shrouded shackle (No. 177), for maximum security against bolt cutters and shackle cut attacks; and an economical die-cast lock (No. 178), which features a corrosion-resistant, powder-coated case. Both offer set-your-own combinations for maximum convenience. Master Lock Co., Milwaukee, WI. Booth 1538.