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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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Contents
Chapter 1 A SAWING TRESTLE
Chapter 2 A JOINER'S BENCH.
Chapter 3 A HANDY BOOKSTAND.
Chapter 4 A HOUSE LADDER.
Chapter 5 A DEVELOPING SINK.
Chapter 6 A POULTRY HOUSE AND RUN.
Chapter 7 A SHED FOR YOUR BICYCLE.
Chapter 8 A TARGET APPARATUS FOR RIFLE SHOOTING.
Chapter 9 CABINET-MAKING.
Chapter 10 TELEGRAPHIC APPARATUS.
Chapter 11 A RECIPROCATING ELECTRIC MOTOR.
Chapter 12 AN ELECTRIC ALARM CLOCK.
Chapter 13 A MODEL ELECTRIC RAILWAY.
Chapter 14 A SIMPLE RECIPROCATING ENGINE.
Chapter 15 A HORIZONTAL SLIDE-VALVE ENGINE.
Chapter 16 MODEL STEAM TURBINES.
Chapter 17 STEAM TOPS.
Chapter 18 MODEL BOILERS.
Chapter 19 QUICK BOILING KETTLES.
Chapter 20 A HOT-AIR ENGINE.
Chapter 21 A WATER MOTOR.
Chapter 22 MODEL PUMPS.
Chapter 23 KITES.
Chapter 24 PAPER GLIDERS.
Chapter 25 A SELF-LAUNCHING MODEL AEROPLANE.
Chapter 26 APPARATUS FOR SIMPLE SCIENTIFIC EXPERIMENTS.
Chapter 27 A RAIN-GAUGE.
Chapter 28 WIND VANES WITH DIALS.
Chapter 29 A STRENGTH-TESTING MACHINE.
Chapter 30 LUNG-TESTING APPARATUS.
Chapter 31 HOME-MADE HARMONOGRAPHS.
Chapter 32 A SELF-SUPPLYING MATCHBOX.
Chapter 33 A WOODEN WORKBOX.
Chapter 34 WRESTLING PUPPETS.
Chapter 35 DOUBLE BELLOWS.
Chapter 36 A HOME-MADE PANTOGRAPH.
Chapter 37 A SILHOUETTE DRAWING MACHINE.
Chapter 38 A SIGNALLING LAMP.
Chapter 39 A MINIATURE GASWORKS.
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