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Chapter 31 HOME-MADE HARMONOGRAPHS.
Word Count: 4624
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Released on: 30/11/2017
s as to what it is, let me explain. It is an instrument for recording on paper, or on some
onograph is shown in Fig.
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1 Chapter 1 A SAWING TRESTLE2 Chapter 2 A JOINER'S BENCH.3 Chapter 3 A HANDY BOOKSTAND.4 Chapter 4 A HOUSE LADDER.5 Chapter 5 A DEVELOPING SINK.6 Chapter 6 A POULTRY HOUSE AND RUN.7 Chapter 7 A SHED FOR YOUR BICYCLE.8 Chapter 8 A TARGET APPARATUS FOR RIFLE SHOOTING.9 Chapter 9 CABINET-MAKING.10 Chapter 10 TELEGRAPHIC APPARATUS.11 Chapter 11 A RECIPROCATING ELECTRIC MOTOR.12 Chapter 12 AN ELECTRIC ALARM CLOCK.13 Chapter 13 A MODEL ELECTRIC RAILWAY.14 Chapter 14 A SIMPLE RECIPROCATING ENGINE.15 Chapter 15 A HORIZONTAL SLIDE-VALVE ENGINE.16 Chapter 16 MODEL STEAM TURBINES.17 Chapter 17 STEAM TOPS.18 Chapter 18 MODEL BOILERS.19 Chapter 19 QUICK BOILING KETTLES.20 Chapter 20 A HOT-AIR ENGINE.21 Chapter 21 A WATER MOTOR.22 Chapter 22 MODEL PUMPS.23 Chapter 23 KITES.24 Chapter 24 PAPER GLIDERS.25 Chapter 25 A SELF-LAUNCHING MODEL AEROPLANE.26 Chapter 26 APPARATUS FOR SIMPLE SCIENTIFIC EXPERIMENTS.27 Chapter 27 A RAIN-GAUGE.28 Chapter 28 WIND VANES WITH DIALS.29 Chapter 29 A STRENGTH-TESTING MACHINE.30 Chapter 30 LUNG-TESTING APPARATUS.31 Chapter 31 HOME-MADE HARMONOGRAPHS.32 Chapter 32 A SELF-SUPPLYING MATCHBOX.33 Chapter 33 A WOODEN WORKBOX.34 Chapter 34 WRESTLING PUPPETS.35 Chapter 35 DOUBLE BELLOWS.36 Chapter 36 A HOME-MADE PANTOGRAPH.37 Chapter 37 A SILHOUETTE DRAWING MACHINE.38 Chapter 38 A SIGNALLING LAMP.39 Chapter 39 A MINIATURE GASWORKS.