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Back#500, CR1220 battery holder, Keystone P/N 2462, https://www.keyelco.com/product-pdf.cfm?p=1027 1xAAA Battery Holder, 2479, Battery Type 3xAAA Keystone Battery Holder 18650 Battery.
- -0.0973514 0.989354 0.108175 facet normal 0.114222 0.990961 -0.0703538.
- -0.301372 -0.0723665 0.950757 facet normal -0.734388.
- = 3, center = false); z_position = sphere_indents_radius.
- Optical Sensor, http://www.kingbright.com/attachments/file/psearch/000/00/00/KRC011(Ver.15).pdf Subminiature Reflective Optical Sensor.