894 



Voltaic Electricity. Section 3: Electro-Magnetic Current Measurements. 



NIL Ill I I - 



61 449. 1 : G. 



61 448. 1 : 0. 



61 446. 1 : 6. 



Reading Telescopes with Universal Scale Holders (but without Scale), Figures. 



List Xo. Objective Aperture 

 mm 

 10 

 15 



Magnification Price 



Remarks 



1 S. (]. 



61,445. 

 61,446. 



61,447. 

 61,448. 

 61,449. 

 61,450. 

 61,451. 



61,45'J. 

 61,453. 



61,454. 

 61,4:.:). 

 61,456. 

 61,457. 



.6 3.15.0) Telescope without Rack, I'ni- 



12 4. 5. ) versal Scale Holder without fine 



adjustment. 



20 16 5. 10. I Telescope with Rack, Uni- 



25 16 6. 5. versal Scale Holder without 



30 20 7. 5.0 | fine adjustment, 



25 16 10. 5. ( Telescope with Rack, Uni- 



30 20 11. 0.0) versal Telescope Holder with 



micrometer tip motion. 



Telescope with Rack, Tni- 



30 20 12. 10. ) versa! Telescope Holder with 



40 L'ti 13.15.0 ) fine adjustment in vertical direc- 



tion as well as about two hori- 

 zontal axes. 



Telescope with Rack, Uni- 



20 16 9. 5. I versal Telescope Holder with 



25 16 10. 0.0 I micrometer tip motion. The 



30 20 10.15.0 I illustration is not exactly in 



40 26 11.15.0 I accordance with the construc- 



tion. 



No. IU.448 is (contrary to the illustration) supplied with Telescope having rark adjustment. 

 The scalea -uitable arc Nos. 61,458 61,475. 



Wood Scales with T-shaped cross section, of old, dry material, with narrow paper strip, accu- 

 rately graduated by means of the dividing engine when first obtained, with mirror 

 figures, when ordinary figures are not expressly desired. 

 A) Graduated every 2 Millimetres*) Length mm loo 



List No. 61,458 

 0. 6. 



I?) Graduated in Millimetres: List No. 61,462 



t 0.7.0 



*) Can be highly reeiuimnMid'-d for low magnification l!":i(lini; Telrsropr>. 



(1. 5697. 



