Antique brass semicircular, 180 degrees protractor, hand marked. Antique folding boxwood sector (instrument pre slide rule) proportional compass with T S N logarithmic degree scales. Antique Stanley boxwood four-fold 12 inch rule with brass calliper. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Falkner, Peter |
Taille de l’image : | 5616 px × 3744 px |
Model Release : | Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation. |
Property Release : | Non requis |
Restrictions : | - |