Description
Schaer’s Self-Calculating Template was patented on August 6, 1895 in the USA. I was used to “Find the average yarn from average threads per inch” and to: “Find yards per square pound.” It is 10.5″ or 17cm long and made of steel.
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Dealer information
M and R Gordon
Michael and Roberta Gordon have been dealing in medical and dental antiques for more than four decades. They have helped build a number of major private collections and have contributed to the holdings of many museums. They also deal in other scientific and technology related items, including calculating instruments, office machines, patent models and wine-related accessories such as corkscrews. ROBERTA GORDON IS A SKILLED RESTORER WHO CAN HELP YOU WITH ANY INSTRUMENTS AND CASES THAT NEED ATTENTION. Feel free to contact them for details at: [email protected] or 718-541-5974