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Light reflection -refraction optic instrument

Light reflection -refraction optic instrument , from the former property of a technical college 35 cm wide  Read More...

A polarisation optics apparatus ca 1890

A polarisation  optics apparatus ca 1890 beautifully restored with various assecoires in total 45 cm high From the former property of a technical college  Read More...

ELEGANT ASTROLABE RETE WITH FLORAL DESIGN

Seventeeth Century Map of the Heavens, Indo-Persian, c.17th century, of pierced and hand-engraved brass, 6″ (15 cm) in diameter. Engraved in Arabic script, the rete, with its map of the heavens and celestial coordinate system, has a circular ecliptic band labeled with the twelve Zodiacal houses and subdivided on the beveled edge for every two days. Arcs of the equator are included inside the upper half of the ecliptic, and outside the lower half. A horizontal bar is counter-changed Read More...

Gunner’s Level and Gauge, early 17th

Gunner’s Level and Gauge Early 17th century Italy Heavy brass, cm 33.2 x 10.6; thickness 6 mm. The long leg of this instrument enables it to be placed in the barrel of a gun to read elevations against a scale of degres. The range of the fire was calculated on the basis of the weitght and caliber of the ball. The instrument also serves as a gunnery gauge, carrying scales for stone (“PIETRA”) and iron (“FERRO”) and measures for PALMI (palms) and PIEDI Read More...

An Early 1900’s low grade ‘Silver’, Folding ,Medicine Fork & Spoon

This antique Folding Medical Spoon & Fork is in great condition. The folding handle has an ornate design – with a different figural face on either side. There is no stamp or makers mark that I can see. It is 16.5cms long – when open.The spoon is tea spoon size.   Read More...

Cased and signed Plossl Microscope.

Cased and signed Plossl Microscope.   Microscope has no accessories other than what is on the microscope.  The top of the limb that contains the body tube is signed:” Plossl Wien”.  The single-sided substage mirror is in fair to good condition.   Case is in very good condition.  I am unable to date the microscope any more accurate than pre-1868.  Microscope stands 9.5” (24.1 cm) tall.  Case dimensions are 10.75” (27.3 cm) long, 3.5” (8.8 cm) wide and 3.75” (9.5 cm) Read More...

20th C Chinese Tortoiseshell & Silver Sun Glasses.

These ornate Chinese Sun Spectacles are in great condition. The round tortoiseshell frames measure 4.2 cms diameter. The overall width is 12 cms. The arm length is 13cms. They were made sometime in the 1900 s Read More...

An inclined plane, also known as a ramp

An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle from the vertical direction, with one end higher than the other, used as an aid for raising or lowering a load.The inclined plane is one of the six classical simple machines defined by Renaissance scientists.ca 100 years old See also my other advertisement of a Wedge Divce Moving an object up an inclined plane requires less force than lifting it straight up, at Read More...

Wedge device demonstrating forces at splitting angle.

Wedge device demonstrating forces at splitting angle.In beautiful and completely original condition.ca 100 years oldThe 3 corresponding wedges are 20-15 and 10 degreesBy using different wedge angels it can be shown that more force is needed at 20 degrees than at 10 degrees15 cm high 48 cm wide 15 cm deep, from the former possession of a technical university, see also my other advertisement of an inclined plane from the same collection . Read More...

Antique microscope mirror condenser C. Reichert Wien ca 1890 with Box

Antique mirror condenser C. Reichert Wien ca 1890 with Boxin completely original and good working conditiondimensions box 22 X 9 X 4 cmWithin the EU no shipping costs, will be sent registered and well-packaged Read More...

Apparatus for the law of refraction and refraction angle of fluids P.J. Kipp

Apparatus for the law of refraction and refraction angle of fluids P.J. Kipp Delft Holland in beautiful and completely old original condition , perfectly cleaned and restored ca 30 years ago by one of the best restorers in this field .Diameter of the glass bowl 22cmtotal height 50 cmwill be carefully packed and sent by registered mail Read More...

Small Lebegue terrestrial globe, 1850’s

A small teresstrial globe by A.N. Lebegue et Cie Bruxelles. Alphonse Nicolas Lebegue (1814-1885) founded the Lebegue company in 1843 after he left Paris, which became one of the most famous printers of the city Brussels. The globe arises from a decorated cast iron stand and is made of plaster and 12 paper gores. It is in good condition, exept from a crack along the coast of africa, however, everything is finely readable. It is adjustable by a screw, which Read More...