Vintage Rubicon Company Galvanometer Cat No. 3401-H Philadelphia PA 1945. 6 Volt, 24 ohms resistance, 5.5 sensitivity. I supplied 6 volts to the unit and it did light up as can be see in the pictures. Not sure how to test any further so the unit is being sold "AS-IS." Unit is in decent condition for its age, no major damage to the wood box, just normal wear for its age. Inside looks clean, but not sure if its complete or damaged in anyway.
eBay
All keys and functions have been tested and work fine.
eBay
Designed for ease of use, they allowed users to quickly view distant objects while maintaining an elegant appearance. 8.6cm by 3.3cm wen folded. This example has been made in horn. The pieces are held with small brass pins.
eBay
This rare vintage pocket map measure opisometer is a must-have for any engineering or surveying enthusiast. With its precise measurements and durable design, this device is perfect for on-the-go calculations. Its unique pocket size makes it easy to carry around, while its classic design adds a touch of vintage charm to any collection. Ideal for collectors or anyone with an interest in engineering and surveying, this pocket map measure opisometer is a true gem. Its scientific collectables and unique features make it a valuable addition to any collection. Don't miss your chance to own this rare vintage device.
eBay
Vintage Barometer For Parts Repair Display Sold as found Seems like glass not original Have age and usage related marks Scratches discolouring dust dirt Some dents Some parts maybe not original, missing or broken Please see pictures for item visual condition and sizes! Item weight 828 g aprox Thank you! AZS 790
eBay
Condition: Very good. All plates intact with vivid colors. Minimal wear consistent with age. Binding tight, pages clean. No markings or writing on plates.
eBay
eBay
The Vintage Deraisme Paris Field Opera Glasses Binoculars are a rare and sought-after collectible item made in France. With a classic design that includes a case, these opera glasses are a unique piece of history that captures the elegance and sophistication of French craftsmanship. The binoculars are unmodified, preserving their original charm and functionality for opera enthusiasts or collectors alike. Perfect for adding a touch of vintage flair to any evening event or special occasion.
eBay