WOW !!! ANTIQUE MEDICAL EQUIPMENT ~ THE DIRECT HALOMETER - ALLEN & HANBURYS LTD 1715 - BOXED

WOW !!! ANTIQUE MEDICAL EQUIPMENT ~ THE DIRECT HALOMETER - ALLEN & HANBURYS LTD 1715 - BOXED 

THE DIRECT HALOMETER 

I DON'T KNOW ANYTHING ABOUT THIS INSTRUMENT AND ALL THE INFO BELOW HAS COME OFF THE INTERNET AND THE INSTRUMENT ITSELF.

MAHOGANY BOX 16cm WIDE

THREE PARTS, THE HALOMETER, A LARGE CONTAINER AND A SMALLER CONTAINER.

LARGE CONTAINER : THIS HOLDS SLIDES. STAMPED ON THE LID " ALLEN & HANBURYS LONDON " AND " M R " ON THE BASE.

SMALL CONTAINER : THIS HAS A SEWING NEEDLE IN IT AND HAS THE SAME MARKINGS AS THE OTHER CONTAINER.

HALOMETER : I THINK YOU MUST LOOK DOWN THE SAME END THAT THE SLIDE GOES IN. THEN YOU TURN THE WHEEL TO ADJUST THE FOCUS? AND THEN READ OFF THE MEASUREMENT ON THE SCALE?

THE SCALE GOES FROM 6u TO 9.5u (A " u" IS THE NEAREST I CAN GET TO THE ACTUAL SYMBOL). THE SCALE IS ALSO MARKED WITH " NORMAL ZONE ".

ON THE MAIN BODY OF THE INSTRUMENT IT SAYS " THE DIRECT HALOMETER - GIVING THE AVERAGE DIAMETER OF RED BLOOD CELLS IN MICROMILLIMETERES - PATENT APPLIED FOR - MANUFACTURED BY ALLEN & HANBURY LTD "

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NON PAYMENT WILL RESULT IN A SNC BEING FILED AND A NEGATIVE RATING 

PLEASE VIEW THE PICTURES CAREFULLY AS THEY FORM PART OF THE DESCRIPTION