CYA

Abacuses; Electronic plotters; Eye glasses; Measuring rules; Optical apparatus and instruments, namely, optical ports for underwater photography, dome ports for underwater photography, wet diopters, adapter lenses for underwater photography; Protective suits for aviators; Tape rulers; Tool measuring instruments; Weighing apparatus and instruments; Safety goggles

Drawing instruments; Marking chalk; Marking stamps; Paper teaching materials in the field of Navigation Equipment, Aviation and Military Supplies; Printed teaching activity guides in the field of Navigation Equipment; Stationery; Tailors' chalk; Writing instruments; Writing implements; Drawing rulers; Ink for writing instruments