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Inexpensive proportional dividers
I'm experimenting using a proportional divider to check points on my drawing for accuracy. I've found using the device saves me time and I'm happier with the final results.
Drafting quality proportional dividers seem to cost around $150. I tried making my own tool, but found it to be inaccurate. However I found a person on ebay (search: "proportional divider") who seems to always have 9" metal ones on sale for about $25. I ordered one and found the accuracy to be right on. The only drawback I have found is that the screw needs to be tightened by pliers, because hand tightening allows it to slip. For the price savings, I've found it worth a little extra trouble. The sellers name is "tedamr"
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