Scissors.  A cutting instrument with two opposing blades. Rig.  1. To pack. 2. A set of sport parachute equipment. 3.  To assemble a parachute. Rigger roll.  To prepare an unpacked parachute for storage  by rolling the canopy into a ball with the suspension lines  around it. Seal press.  A mechanical press used for compressing lead  seals to seal parachutes in accordance with 14 CFR part  65, subsection 65.133. Seam ripper.  A small tool used for picking or cutting threads  in sewing operations. Ripcord.  A locking device that secures the pack in a closed  condition and by which the release of the parachute is  effected. It may consist of a handle, cable, locking pins, and  a cable swage. Seams.  Where two pieces of fabric are joined together. Sear.  Damage to fabric or lines by heat generated through  rubbing. The melting of webbing, fabric, or line of nylon to  prevent fraying. Ripcord cable.  A flexible cable joining the locking pins and the ripcord handle.  Seat parachute.  Parachute positioned below the back of the  wearer. Forms part of the seat cushion in the aircraft. Ripcord housing.  A flexible tubing in which the ripcord  is installed for protection and to provide a free path for  the ripcord. Section.  Any one of the pieces of cloth which, when  assembled, form one gore of a parachute canopy. Also known  as a panel. Ripcord housing clamp.  A metal clamp located on the  outside of the end flap of back and seat-type parachutes.  The clamp secures the ripcord cable and power cable of  the actuator. Selvage edge.  The edge of cloth which is so woven as to  prevent raveling. Ripstop nylon.  A type of weave designed to prevent tears  from spreading. Extra numbers of yarns are closely woven  into the cloth intermittently across the width and across  the length. Senior Parachute Rigger.  An individual certified by the  FAA to pack and maintain parachutes. A journeyman level  classification of parachute rigger. Sewing machine.  A machine with a mechanically-driven  needle used for sewing. Ripstop tape.  Ripstop nylon fabric with a pressure sensitive  adhesive. Used to repair small tears in canopies. Riser.  The portion of the suspension system between the  lower end of a group of suspension lines and the point of  attachment to the load. Sewing machine knee lifter.  A knee-operated mechanism  that lifts the presser foot of a sewing machine. Sewing machine uprise.  The uprise is the upright part of  the head (generally located on the right side of the head) that  houses a portion of the moving parts that transmit motion  through mechanical shafts and linkages to the mechanisms  in the base of the machine. Riser release.  A canopy release. Roll packing.  A method of packing a ram-air parachute  whereby the nose and the tail are rolled towards the center  of the canopy. Sewing pattern.  A design outlined in drawings for  joining parts. Routine inspection.  A visual inspection of all parts of a  packed parachute that may be checked without opening the  parachute. Shock cord.  A straight elastic cord comprised of continuous  strands of rubber encased in a braided cover. Used today  primarily for Safety Stow$^{®}$ loops on free bags. Shock load.  The maximum force exerted on the canopy by  inflation. This maximum force may be the snatch force or it  may be the opening shock. S.A.E.  Society of Automotive Engineers. Saddle.  The part of the harness positioned under the seat of  the wearer. Safety tie.  The thread used in sealing a parachute. S  G-10