CARL,
ZEISS WEST GERMANY
For utmost ease and speed in checking liquids and solids
The famous ABBE REFRACTOMETER Incorporates the following features : R a n g e of m e a s u r e m e n t s : n n 1.3 t o n u L.71 and sugar percentage scale 0 % to 9 5 % . For liquids and solids by t r a n s m i t t e d and reflected light. Measuring surface of index prism always at horizontal position. Observation telescope m o u n t e d stationary at an inclined position to carry out measurements a t a relaxed posture.
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Border line of t o t a l reflection and scales are observed simultaneously in tele scope. Measuring prism in heating m o u n t can be easily interchanged. All movable p a r t s are fully protected by being entirely enclosed within the housing. Special index prism in heating m o u n t available for measurements up to rip 1.85 (on special order only). For highest-accuracy measurements, an U l t r a - T h e r m o s t a t with different con stancy of t e m p e r a t u r e ± 0 . 0 0 5 ° is available as an accessory. In addition to the above model, the new Abbe Refractomctcr Model Β is avail able for use where high temperatures are involved. This model is equipped with t e m p e r a t u r e controls, a n d finds a wide use in industrial laboratories.
CARL ZEIS, INC.
COMPLETE SERVICE FACILITIES
4 8 5 F I F T H A V E N U E , N E W Y O R K 17, Ν. Υ. Circle No. 2 on Readers' Service Card
VOL. 32, NO. 8, JULY 1960
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