uncleflo
Registered since September 28th, 2017
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Concrete pontoon float (BP300) - PONTON
Saved by uncleflo on November 14th, 2022.
Concrete pontoons stand out in contrast to other pontoons for its stability and durability. The concrete pontoons are filled with foam plastic and are resistant to freezing in as well as to salt water exposure. The pontoons, from the heavier breakwaters made of concrete to the lighter ones made of wood, are designed to last for 30-50 years. The all concrete and styrofoam construction of the pontoon produces a very high degree of buoyancy thus making it virtually unsinkable. It is practically maintenance-free and has little or no impact upon Nature and the Environment. Each standard pontoon is designed to accept electrical and water supply services.
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Lenses Database - DxOMark
Saved by uncleflo on May 11th, 2021.
DXOMARK's comprehensive camera lens test result database allows you to browse and select lenses for comparison based on their characteristics, brand, price, lens type, lens size, focal range and aperture. You can also select a camera to see the results for all the lenses tested on it. With DXOMARK you can display the lenses with three different views - Grid, List or Graph in order for you to have the best solution to compare the filtered results. Choose the lenses you want to compare from the results below. Then in the selection box, you can check up to three lenses at a time to compare their measurements.
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OLAS Tag | Exposure OLAS | Safety at Sea
Saved by uncleflo on April 10th, 2021.
The OLAS tag is a compact OLAS transmitter, easily attached to adults, children, pets and objects such as overboard floatation devices. The tags are tracked by the OLAS application on a mobile device or via the Core, Guardian and Extender. Seconds after the tag breaks connection with an OLAS receiver the crew are alerted by the OLAS alarm and light, whilst the OLAS MOB rescue screen are activated on the OLAS mobile application. Each tag is supplied with a universal silicone wrist strap with stainless steel buckle and a pre-installed CR2477 Battery (user replaceable).
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How to Keep Polished Brass From Tarnishing - Hunker.com - By Brenda Priddy
Saved by uncleflo on February 23rd, 2019.
Brass will automatically start to tarnish if exposed to oxygen. The only way to prevent polished brass from tarnishing is to coat it with a layer of clear sealer that will prevent air from reaching the brass itself. Many brass surfaces come with this finish originally, but it can wear down over time. Refresh the coating every few years to keep the brass shiny and like-new without frequent polishing. A clear polyurethane sealer will protect the brass from oxygen exposure without causing discoloration.
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Lens Tests: A Simple Method
Saved by uncleflo on January 6th, 2019.
This is a simplified subjective method of testing lenses optical sharpness. This should not be confused with tests for focus accuracy and discrimination in a 3D environment, that is a totally different issue although often confused by the inexperienced. A focus accuracy test is suggested here Focus Test. The advantage over this method, compared to just taking a shot of a garden etc, is elimination of variables such as subject and camera movement, insufficient depth of field, flatness of field and variations in focus location. It uses a nice consistent high contrast subject to make comparisons easy; checking sharpness on general photographic views is not very easy. As the method is subjective, it is worth testing against a known good lens for comparison.
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