BULLOCH TRANSITIONAL STUDENT MICROSCOPE MODELS (3rd Versions)
SERIAL NUMBERS: 406, 513
SIGNED: 'W.H. BULLOCH, 513, CHICAGO, ILL' and 'MEYROWITZ BROTHERS, NEW YORK' (both on the circular stage)
Please click on the images for larger versions.
These are 2 of three known examples of the Walter Bulloch Student microscope, 3rd version. They differ only slightly in the amount of brass in the arm above where the saddle fitting is attached.
I am grateful to the former owners of these instruments for allowing me to use their images, as they are not in my own personal collection. The images of number 513 were generously provided by William Burnett of Hamilton, Montana. I have modified some of the backgrounds to clarify some features.
There are only only two significant differences between the two examples shown here. One is the different nosepiece changers with the scopes; the earlier stand has a double nosepiece, and the second a quick-change nosepiece invented by Fasoldt and patented in 1886. This is ironic as Bulloch invented his own version of quick-change objective fitting. The only difference between the actual stands is the improvement in the thickness of the limb in the later stand, as shown by the arrows. This is an obvious improvement because the thickness of the limb on the earlier stand is quite slim, and with brass construction, could fail if enough weight was added to the optical tube. This type of subtle improvement was typical of Bulloch who continually strove to improve his stands. More images of number 513, generously supplied by William Burnett of Hamilton, Montana are shown below.