Early Sets |
Traditional Sets |
Later Sets |
Major Makers |
Instruments |
Miscellanea |
W F Stanley |
A G Thornton |
W H Harling |
Elliott Bros |
J Halden |
Riefler |
E O Richter |
Kern, Aarau |
Keuffel & Esser |
Compasses |
Pocket compasses |
Beam compasses |
Dividers |
Proportional dividers |
Pens |
Pencils |
Rules |
Protractors |
Squares |
Parallels |
Pantographs |
Sectors |
Planimeters |
Map Measurers |
Miscellaneous |
Materials Used |
Who made them |
Who made these |
Addiator |
Addimult |
Other German |
USA |
Miscellaneous |
Microscopes |
Barometers |
Hydrometers & Scales |
Pedometers |
Other instruments |
Workshop Measuring Tools |
Catalogues & Brochures |
A Collectors Tale |
Abergavenny Instruments |
Spring Design Rule |
Sperry Sonar Calculator |
Thornton 6039 1/2 |
Hudson slide rules |
Hudson continued |