This vintage concise circular slide rule, made in Japan by Takeda, is a rare find for collectors of scientific and engineering memorabilia. The slide rule comes with instructions and is housed in a protective case, making it a complete and well-preserved piece. Good condition Light wear to Instructions Approx 11cm diameter
eBay
A kaleidoscope is a toy that uses light and mirrors to reflect objects and create beautiful, fascinating repeating patterns. Handmade Kaleidoscope made In High Quality Solid Brass. Material :Brass & Glass,Leather.
eBay
This antique aneroid barometer or altimeter mechanism from the United Kingdom, dating back to the 1800s, is a rare find for collectors of scientific instruments. Made of brass, this piece embodies the craftsmanship and precision of a bygone era. Whether for parts or repair, this unique item offers a glimpse into the history of scientific innovation and measurement. Sold as seen on pictures
eBay
When the slide is pulled out it goes up to 49cm long. Very old and interesting.
eBay
eBay
Brass is dull - could be polished. Well made little box with Brass pop catch to lid and Brass hinges. Nice box / case with INCOMPLETE / MIXED drawing set. Upper still has space for Rule. Has PART SET / MIXED SET.
eBay
eBay
Here is a striking vintage medical instrument — a National retinoscope (circa 1950s–1960s) in its original fitted box. Though not fully complete, it’s perfect as a decorative / display piece for medical offices, vintage décor settings, or as a conversation starter. Photos are part of the description. Some parts missing.
eBay