Item.bmd 500 Speed
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The name Speed Booster is from Metabones. There are other companies making similar designs, and this optical design is called a focal reducer. However, because Metabones was the first one out, and the one with the best pedigree, I recommend only Metabones ( Amazon, B&H ) unless you are short of cash. In which case look at other options.
Speed Concepts: Informational Guide Traffic speed is an important yet complex topic in the transportation engineering community. Furthermore, speed is of considerable interest to enforcement agencies, safety advocates, property owners, users of the transportation system, and the public at-large because of its perceived effect on crash risk. Each of these stakeholders perceives speed measures differently; therefore, many issues related to speed are either misunderstood or remain unanswered. This guide: 1) defines common speed-related terminology so that the guides contents can be clearly conveyed, 2) explains the differences between designated design speed, inferred design speed, operating speed, and posted speed limits, 3) illustrates perceptions and research conclusions related to the effects of speed, 4) documents speed-based technical processes, 5) summarizes State and local government agency roles and actions related to traffic speed, and 6) highlights speed management and mitigation measures. [FHWA-SA-10-001]
Made from heavy duty polyurethane wheels the innovative FastCap Speed Skate can be used for materials up to 500 lb capacity and allows the contractor or do-it yourself to move large and heavy objects easily around the job or shop by yourself. It easily supports 4' x 8' sheets of material up to 1-3/4 wide. Large wheels and ball bearings allow you to move boards without struggle. 3d9ccd7d82