TO MY SON

Binoculars; Eyeglasses; Inclinometers; Microscopes; Scales; Sextants; Telegraphs; Telescopes; Theodolites; Cases for eyeglasses and sunglasses; Compasses for measuring; Directional compasses; Diving helmets; Diving suits; Eyeglass cases; Fluorescent lamp ballast for electric lights; Hourglasses; Magnetic compasses; Magnetic compasses for surveying; Magnifying glasses; Marine compasses; Marine depth finders; Monoculars; Signal bells; Spirit levels; Surveying apparatus; Time clocks; Tripods; Whistle alarms; Alarm bells, electric; Automatic telegraph apparatus; Computerized time clocks with fingerprint recognition; Hard plate personal body armor; Manual telegraph apparatus; Needles for surveying compasses; Signal whistles; Sport whistles; Surveying compass needles; Weighing scales; Zenith telescopes