CONTENTS OF THE CATALOGUE, 91 



. " - Page 

 Mathematical and Preliminary Mechanic* 142 



Drawing and Painting 142 



V\^riting, Characters, Signals 143 



Geometrical Instruments in General 144 



Pens and Rules 144 



Compasses 144 



Proportional Compasses 144 



Pantographs 144 



Triangles 145 

 Measurement of Angles in General, and Construe- 145 



tion of Instruments 145 



M icrometer 1 45 



Theodolites, Quadrants, and Sextants 145 

 Protractors, and Compasses for measuring Angles 146 



Angular Surveying 146 



Leve s 146 



Mathematical Machines 146 



Measures 146 



Modes of obtaining a Standard 146 



Comparison of Measures 147 



Tables of Measures. Standards 148 



English Measures I 150 



Scotch Measures 151 



Old French Measures 151 



New French Measures 152 



Ancient Measures 152 



Modern Measures 153 



Modern Measures of Surface and Capacity 155 



Measuring Instruments 155 



Rods 155 



Chains 155 



Scales 155 



Micrometers 155 

 Hodometers. Machines for measuring Distances 156 



Instruments for observing Distances 156 

 Surveying =156 



IMaritime Surveying 156 



Gauging, and Measurement of Solids 156 



Modelling 157 



[Casting 157 



'Sculpture 157 



Perspective 157 



Perspective Instruments 157 - 



Projections of the Sphere 158 



Engraving and Etching 158 



Printing . I58 



Types 158 



Musical Types 159 



Copper plate Printing 159 



Copying , , lo9 



Paper I59 



Bookbinding 159 



