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Archives: Portfolio

A portfolio type for featuring items in your portfolio.

Courvoisier’s spiral slide rule

Portfolio 1

A neat solution to the turn problem

My take on the Marble Run concept

Portfolio 3

Fun to build, fun to play with!

You did WHAT on a Commodore 64?!

Portfolio 5

Oh, yes, I sure did.

A new mathematical robot

Portfolio 7

ENIAC, in real time!

Building a Roubo Workbench

Portfolio 9

A woodworker’s rite of passage

Blue Velvet

Portfolio 11

The lovely Adix calculator

The Fractal Bug

Portfolio 13

A fascination – and a free fractal generator

Sabatini’s magnificent calculator

Portfolio 15

Even Mussolini was impressed!

Real Bookmarks from True Favorites

Portfolio 17

Vignettes of some cherished bookstores

Beautiful Digits

Portfolio 19

Numeric displays of yesterday

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