288 



NEGRETTI AND ZAMBRA, HOLBORN VIADUCT, E.G., 



FIG. 1136. 



1135 8-inch Drainage Level, with rackwork adjusting Telescope, parallel plates, 



in mahogany case and tripod stand without Compass (fig. 1135) 660 



1136 8-inch Drainage Level, with rackwork adjusting Telescope, with Compass, 



Cross Level, parallel plates, in mahogany case and tripod stand (fig. 1136) 



880 



HAND LEVELS, FOB BUILDERS, ENGINEERS, ETC. 

 1136* Spirit Levels, mounted in polished mahogany frames, 



with brass top (fig. 1136) : 



Length inches . 4. 5. 6. 7. 8. 9. 10. 12. 

 Price . . 2s. 6d. 3s. 3s. 6d. 4s. 4s. 6d. 5s. 5s. 6d. 6s. 



1137 Ditto ditto Brass-tipped at bottom. Superior finish. 



Length inches ... 6. 8. 10. 12. 



Price .... 4s. 6d. 5s. 6d. 6s. 6d. 7s. 6d. 



1138 Ditto ditto Brass-plated at Bottom 5s. 6d. 6s. 6d. 8s. 6d. 10s. 6d. 



FIG. 1136. 



FIG. 1141. 



FIG. 1140. 



1139 Spirit Levels, rosewood frames, and German silver 



mountings : 



Length inches ... 6. 8. 10. 12. 18. 



Price . . . .6s. 6d. 7s. 6d. 10s. 6d. 12s. 6d. 16s. 6d. 



1140 Spirit Levels, plain Brass mountings (fig. 1140) : 



Length inches 4. 5. 6. 8. 10. 12. 



Price .... 2s. 2s. 6d. 3s. 6d. 5s. 7s. 6d. 10s 



1141 Spirit Levels, Brass mountings, with adjusting screws 



and best ground tubes (fig. 1141) : 



Length inches 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 

 Price . . 6s. 8s. 10s. 12s. 14s. 16s. 18s. 20s. 22s. 24s. 



'If with divided tubes, extra. 



