dimensions

The following is from the RTL FAQ posted at

Geometry, provided by Jef Poskanzer ( snipped-for-privacy@netcom.com): Thanks to various pointers, especially the MIT course notes, here is the metric version. **All measurements in mm.**

|side: __ __ __ __ top: +----------------+ | +----------------+ | () () () () | | | | | | | | | | () () () () | | +----------------+ +----------------+ |spacing of knob centers: 8 |diameter of knobs: 5 |height of block: 9.6 | |end: __ __ bottom: +================+ | +--------+ # -- -- -- # | | | # ( )( )( ) # | | | # -- -- -- # | +--------+ +================+ |height of knobs: 1.7 |thickness of block walls: 1.5 |outer diameter of cylinders: 6.31 |thickness of cylinder walls: 0.657 (height of block) = (spacing of knob centers) * 6 / 5 (thickness of block walls) = ((spacing of knob centers) - (diameter of knobs)) / 2 (height of knobs) = (height of block) / 3 - (thickness of block walls) (outer diameter of cylinders) = sqrt(2) * (spacing of knob centers) - (diameter of knobs) (thickness of cylinder walls) = ((outer diameter of cylinders) - (diameter of knobs)) / 2

Hi,

Thanks for your respond. Looking at the numbers, I presume they are converted from inches. Is that right?

Léon

snipped-for-privacy@thrijswijk.nl

I do not know how the above dimensions were obtained. I assume someone measured a brick. Below are the measures, in inches, that I get from measuring a brick. Since the brick was design in Denmark, I would have thought the dimensions would be metric, but the inch dimensions seem to be more exact when putting the ruler next to a brick.

spacing of knob centers: 5/16 diameter of knobs: 3/16 height of block: 3/8 height of knobs: 1/16 thickness of block walls: 1/16 outer diameter of cylinders: 1/4 thickness of cylinder walls: 3/128 (?)

Not given above: length of block: 1-1/4 width of block: 5/8