How do i enter measurements in sketchup 6 cm 5/8
The Metric system’s only real asset is the particular size of the millimeter. Because of these innate characteristics I have always used both, often in awkward combination. THE ARGUMENT: The Metric system excels at smaller measurement while Feet and Inches are better suited to larger. THE SOLUTION: A system of measurement that retains Feet and Inches and then divides the Inch into 24 parts. THE PROBLEM: Neither the familiar system of Feet and Inches nor the Metric system of meters and millimeters are suited to the type of measurement and calculation woodworkers and other craftspeople use day in day out. How can the ruler, an age old measuring device for woodworkers, possibly be improved upon? Read on to find out! This is serious, and has a pretty good rational. But if you thought it was hard to change to metric imagine convincing many people to go with Bobs. A cogent argument for something inbetween inches and metric.
The bad numbers had been used since the spacecraft's launch last December, but the effect was so small it went unnoticed The difference added up over the months as the spacecraft jouneyed toward Mars." "We should have had them in metric units," he said. Lockheed officials are reviewing contracts to see whether the space agency specified the units of measurement, said Noel Hinners, vice president of flight systems for Lockheed, Martin Astronautics in Denver. Gavin said previous Mars missions always used metric measurements. "We had multiple systems of checks and balances, but they just didn't catch it," he said. "We're talking about velocities in millimeters per second,'' said Tom Gavin, deputy director of the laboratory's space and Earth sciences programs. The ship flew just a hair too close and disintegrated in the Martian atmosphere. Their computers used the metric term newtons, or grams per second of force, to send final course and velocity commands to the Mars-bound spacecraft. "In an embarrassingly simple mistake, NASA officials said yesterday, the spacecraft burned up on impact with the thin Martian atmosphere because two navigation teams and their computers had confused English and metric units.Īfter flying more than 415 million miles over nine months, the spacecraft was about to enter its first orbit around the Red Planet last Thursday when it accidentally flew too low toward Mars, mission engineers said at the time.īut yesterday the engineers said they had found the cause: It turned out that Lockheed Martin engineers in Colorado, who built the spacecraft and are responsible for its health, transmitted the orbiter's final course and velocity to Pasadena using the English term of pounds per second of force.īut the spacecraft's navigation team at JPL Mission Control in Pasadena -like almost all space scientists and engineers - always use the metric system in their work.