532 



Optical Instruments. Microscopes. 



No. 54380 



54 382. 1 : 5. 



54386, 54 386 f, 54 386 h. 1 : 5. 



54 380. 1 : 5. 



53 385. 1 = 6. 



54,380. Model Theodolite, Figure, of metal, with level and cross-wires, can be used as a * ' 

 sight. The circles are divided in 360 and verniers permit of reading to Vio" 1 . Circle 

 rotary for repetition, telescope without lenses i 4. 0. o 



54,381. --idem, with Telescope, ocular movable by rack and pinion 



54,382. --idem, Figure, with Telescope, Ocular Prism, and Sun Glass, for astronomic:*! 



observations (M. T. p. 26) 



54.383. Stand for Model Theodolites Nos. 54,380/2 (W. D. Fig. 29), with- stem screw . . . 



54.384. Carrying Case for Model Theodolites Nos. 54,380/2, for use in field work .... 



54.385. Model Theodolite for Students' Exercises, Figure, with Telescope and Carrying Case, 

 Folding Stand, Measuring Chain, and folding Measuring Stave 3 in long. The horizontal 

 circle is 10 cm diameter and the altitudinal circle !l.5 cm 



54.386. Theodolite, cf. Figure, horizontal circle 120 mm diameter divided in 1 / 2 , verniers 

 giving 1', graduated on brass, silvered, uncovered. Reading by means of hand glass; 

 telescope 200mm focal length, power 20, inclusive of bolts and stand witli tribrach . 



Extras: (a) for repetition 2.0.0; (b) for telescope a\is Imvinji clamp and fine adjustment 

 1.5.0: (<) for rotary "magnifying glasses 1.4.0: (d) levelling bubble i 1.4.0: (e) for graduating 

 the horizontal circle on (ieriiian silver 0.15.0: (f) for spherical stand \vitli tribrach instead of the 

 bolting stand 0.10.0; (g) for graduating the horizontal circle on silver in 1 / 3 , verniers giving 30" 

 covered, \vitli rotary magnifiers, 4.5.0; (h) for dividing the altitudinal circle in Vz on brass and 

 silvering, verniers Diving 1', 3.0.0: (i) for telescopes arranged for throwing back, with adjustable 

 carrier 1. 7. 0. 



6. 0.0 



6.12.0 



1.10.0 



1 . 6. 



8. 0.0 



12.10.0 



Cl. 1528. 



1527,8098, 1529. 



