The Chicago Optical Company Trial Lens Set from the 1930s is a rare and sought-after collectible for those interested in optical history. This complete set includes all the necessary lenses for trial purposes, providing valuable insight into the field of ophthalmology from that era. As an antique piece, it holds historical significance and serves as a unique addition to any optical or medical collection.
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German Made, Appears to be in very good condition with it's original display case.
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The Vintage CSE Corporation Model 102 Permissible Methane Detector is a rare and sought-after collectible item for enthusiasts of scientific instruments. This device, manufactured in the United States, holds historical significance in the field of methane detection and is a valuable piece of vintage science equipment. With its unique design and functionality, this detector serves as a tangible reminder of the technological advancements in the mid-20th century. Selling as is as I have no way of testing it.
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MARKED W GERMANY. ONE PIECE MISDING.
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Check out my other items! DESCRIPTION: Size- approx 5 inches Brass theodolite alidade telescope compass engineering and navigational marine instrument. MATERIAL-Brass and glass Uses- ancient time to measure angle and distance of the object. Look Photos For Actual Image Of Product. All Work is Handmade This is a Reproduction Item, Not Sold As Antique. Good Piece Of Collection. Best for gift. UseFul In Travel Time. Check out my other items!.
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Slide ruler vintage USSR Kyiv 1963 This is an analog computing device that allows you to perform several mathematical operations, including multiplication and division of numbers, exponentiation (most often square and cube),
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