What are the basic principles of optics relevant to navigation (e.g., use of binoculars)?

Safety Notice. Although Bishop Lifting strives to manufacture and sell the highest quality rigging and safety gear, use of the gear is dangerous if not used ... Sep 23, 2014 ... I use them for help in untying knots that have been pulled tight enough that I have trouble untying them with my fingers, but that's about it. Jan 7, 2022 ... ... used to mean “cryptography” than I am the latest NFT drop. Also – cards on the table here – I don't share the same generational excitement ... Nov 15, 2021 ... The Marlinspike hitch is used for making a rope ladder. Method. Begin with an overhand loop (a loop which the working part passes over the ... ... Marlin Spike Hitch used for hammock suspension from Dutchware Gear; Titanium Toggle for the marlin spike hitch used in knot for hammock suspension from ... Jan 29, 2023 ... The marlin spike is used to tighten and separate strands of rope and cable, and is a huge help in the process of splicing. Aug 9, 2007 ... A clasp knife with marlin spike and lanyard was introduced (or the use of it confirmed) in Feb 1872 , for Engineers. LoC 2309. The next clasp ... Marlinspike, a Washington, D.C.-based venture capital firm redefining defense innovation through dual-use investing, announced the formation of the Marlinspike ... May 27, 2017 ... Frank's post about his knot untier reminded me of the marlinspike I made years ago. It's the tool sailors use to loosen stubborn knots that ... Jun 21, 2010 ... I am starting a new quest. I need to find a decent WW2 Navy Marlin Spike Knife by Camillus. It is for an elderly friend who served in the ...