Juggling Slide Rule - Complex

(24.4cm Scale, Prototype)

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Juggling Slide Rule - Complex (2011)
Image
Image Summary
System: System Tombeur prototype
Specialization: Juggling
Type: Closed frame
Material: Mahogany laminate
Facings: Perspex/paper
Scale Length: 24.4cm No of Scales: 9
Front Length: 282mm Front Width: 46mm
Language: English Origin: England
Date: 2011, October
Features/Notes: Advanced Juggler's slide rule, superceded by model A2.
Scales (colours as shown)
Front: 1, A [ CI, SI, 2, C ] D, AI, 3 Back: -
Labels Left: n1, h A [ C-1 ns-1, sin-1q, n(wb), t bt x10-1s C ] D v, A-1 d-1 x10-2m, q Labels Left: -
Labels Right: - Labels Right: -
Style: Railway track Typeface: Serif
Extensions: - Decimals: Tenths between 1 & 2 on CI, C & D
Gauge Marks: p (3.14) on C & D
g (9.81) on C & D
Rulers: -
Features/Notes: Printed on paper with Perspex facing.
1 scale on upper stock rail (labelled n1) is a specialist index scale of throw weights in a juggling pattern.
2 scale on slide (labelled n(wb)) is a specialist scale of throw weight and hold times in a juggling pattern, which uses the tick marks of the C scale below it.
3 scale on lower stock rail (labelled q) is a two line, specialist scale for throw angles in a juggling pattern.
Construction
Stock: Solid stock constructed from laminated 4mm thick mahogany strip to make well and slide and cursor grooves.
Upper and lower rail widths respectively (mm) - 10 & 19.5
Front faced with 1mm Perspex.
Paper scales and Perspex fixed with clear double-sided tape and anchored with M1.2 machine screws, one each at left & right ends of upper stock rail, and two each at left & right ends of lower stock rail (6 in total).
Mid level cursor grooves.
No bevel to top and bottom edges.
Shallow rebate in back for paper tables.
Fully varnished (excluding Perspex).
Length x Width x Height (mm) - 282 x 46 x 13
Slide: Single sided
Constructed from laminated 4mm mahogany strip to form locating tongue.
Front faced with 1mm Perspex.
Paper scales and Perspex fixed with clear double-sided tape and anchored with M1.2 machine screws, one each at left & right ends (2 in total).
Fully varnished (excluding Perspex).
Front face width (mm) - 16.5
Cursor: Single central black hairline.
3mm thick Perspex pane attached to seperate top and bottom runners.
Runners fashioned from beechwood block.
Fully varnished (excluding Perspex).
Pane attached to runners with 4 x M1.2 machine screws, one in each corner.
Steel spring on top runner, mounted at left end with a M1.2 machine screw.
Width x Height (mm) - 38 x 59
Printing (colours as shown)
Stock: -
Slide: -
Cursor: -
Labels: On back, summary instructions, formulae and variables, with footer "COMPLEX JUGGLING SLIDE RULE - C. TOMBEUR OCT 2011"
Instructions
Guide to Simple and Complex Juggling slide rules can be downloaded from the link above.
Box (colours as shown)
Style: None L x W x D mm: -
Material: - Colour: -
Construction: -
Printing: -
Labels: -
Detail Images
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Click on the images for enlargements.
Click on the images for enlargements.
Count Belmiro © Copyright December 2011 - July 2015
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