used unit as-is missing a clamp on holder , other clam is there, 42(f4.2mm) na 0.6510 (16mm)na 0.65025 ba optico co 15mm broncse43(f4.2mm)Na0.65

 

Set of 3 great condition out of a doctors office I just cleaned out dr has been in his office for 50 years an he says theve been there a long time

 

"Marble Scope" is a wonderful handheld marble kaleidoscope by Sherry Moser. This scope has a 21.85mm removable marble as the object. Any marble of this size could also be used in this scope as the obj

 

Item is in very good condition, it runs great! It is lightweight, portable, great for those hard to reach spots. Can run for 16 hours on one charge. Can be equipped with solar charging(not included).

 

OUT OF PRODUCTION, DR. BREWSTER'S ULTIMATE PRECISION KALEIDOSCOPE KIT BY VAN CORT INSTRUMENTS, INC. NEVER USED. BOX IN EXCELLENT CONDITION. COMES WITH INSTRUCTIONS. ONE ITEM HAS HAD THE PLASTIC OPENED

 

~ PORTER MICROCRAFT MICROSCOPE LAB ~ Vintage microscope science lab kit by Porter Chemical Co. of Hagerstown, MD. The case Great for display. Heavy-duty case. Housed inside are the original microscope

 

This is for a stylish pair of well made Edwardian fold up spectacles that are very unique in the way they fold away. The white metal nose bar is hinged at both ends to fold the lenses together and the

 

SPECIAL VINTGA AND VERY COLLECTABLE ARISTO SLIDE RULE SCHOLAR #803 NEW OLD STOCK, IN PERFECT CONDITIONS. IT COMES IN ITS ORIGINAL CASE AND BOX WITH THE ORIGINAL MANUAL THAT PRINTED IN SPANISH FOR THE

 

ANTIQUE 2 PART DOUBLE SIDED FOLDING SNELLEN EYE CHART TEST FOR DOCTORS OFFICE THE FOLSOM CHART IS DATE 1914 AND I DO NOT SEE A DATE ON THE WOOLF CHARTS BUT THEY WERE FOUND TOGETHER AND DATE AROUND THE

 

For sale is this vintage 1950's Pickett & Eckel, Inc. 12" Slide Rule - Model 800-ES - Includes leather case and handbook - Says "Chicago" on the slide rule - The date on the handbook's inside fron