New%20innovative%20design%20for%20day%20and%20night%20use.%20Red%20LED%20light%20built%20into%20each%20leg%20for%20use%20in%20low%20light%20conditions.%20Center%20adjustment%20mechanism%20allows%20quick%2C%20precise%20operation.%20Tool%20functions%20as%20both%20a%20compass%20and%20divider.%20%0D%0ABattery%20lasts%20approximately%2020%20hours%20with%20lights%20on.%20Uses%20one%20CR1220%20battery.%20Spare%20point%2C%20lead%20and%20knob%20provided.%20%0D%0AComplete%20instructions%20included%20in%20package.%20Length%3A%207%22%20(178%20mm).%20Wt%3A%200.19%20lb.%20(86%20g).