When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Light gray circular grid: clearly visible but not too dominant. Bonus cheat sheet with classic polar graphs and equations. 5-degree angles (angles every 15 and 30 degrees are a bit darker and are labeled).
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.