Rigging Cord Measurer Plus! (2 of 3) Printable Version of Instructions

Rigging Cord Measurer Plus! (continued)

" First, I removed the internal extension spring that was used to cause the spindle shaft to return to the rest position.

Secondly, I made a new larger platen/anvil point to distribute the weight of the spindle shaft when it is used to measure the line/cord.
That is self defeating, to a point (pun intended :) because the larger platen adds a small amount of weight.

To really measure a line/cord accurately requires either an optical comparator that projects a magnified image of the cord upon a screen where you can compare it to a known standard or scale, or a Toolmaker's microscope where you can measure the cord with the optics, a known standard or scale,   without any physical contact.

However, I think that is beyond the scope ( pun intended again :) of the normal hobbyist/ship modeler.

The only thing left is to calibrate the "Rigging Cord Measurer" by comparative measurement against "known" diameters as supplied by manufacturers and kit sellers..... Much like "zeroing in" a rifle with adjustable sights.....
"

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