Zentmayer, Phila, Pat'd Aug

Dating leitz microscope

The New Clinical Microscope No. Collecting Microscopes The serious antique microscope collector inhabits a niche market that requires perseverance, knowledge and luck. But also instruments produced by less famous less skilled artisans, mostly by hand and realized in brass, were optically and mechanically very good and also very often aesthetically magnificent.

The Harley binocular microscope. He further refined the instrument with the incorporation of a rack and pinion coarse focus and fine focus enabled by a graduated wheel. Some vintage microscopes sell for a few hundred dollars, but most collectible models start in the thousand-dollar range. Binocular microscope with Varley Stage Two examples of the R.

Set up with both transmitted and reflected light sources. These first fledgling microscopes were generally built and used by a scientist.

Grunow Binocular microscope c. Many microscopes were sold in wooden boxes with serial numbers on them and finding a vintage microscope with the box enhances the value. They, however, are the testimony of the hunger for discovering and understanding the world, which was consuming scholars such as Darwin, or explorers such as Scott in the Victorian age.

The Universal Model Binocular Microscope

Most likely made by an amateur, c. The Universal Model Binocular Microscope c. Large continental style microscope, c. They can only be found in museums and are not available to the average antique microscope collector. Imported case-mounted French microscopes, c.

Binocular microscope for conventional and polarized light microscopy, c. Leitz Travelling Microscope c.

Oberhaeuser, Place Dauphine, Paris. Spencer's Trunnion Model Microscope c. Most versions have two places in the back for a lamp holder, one at the base for transmitted light and a second higher in the back for incident reflected light. Using it with the upper lamp holder for incident lighting would require switching to a special epi-turret with a tube to conduct the light into the epi-objectives.

His invention, a compound microscope, had a convex and a concave lens. The beauty of an antique microscope is manifested in myriad ways. Gruby Type Pocket Microscope, c. The final version of the Professional Model microscope, c. Set up with plan objectives for brightfield observations.

This allows certain types of fragile samples to stay still. Highley, London Solar microscope with screw barrel, c. Used with a special condenser top lens, and a special objective. Used even on high-end models such as the Ortholux. In the edition of his book, W.

Most likely made by an amateur

McIntosh Battery and Optical Co. This was one of the last but best efforts from the combined Leitz and Wild engineers. After setting the exposure the shutter release is by a manual cable. Case-mounted portable microscope c. The Grand American model, c.