Juggler's Slide Rule - A2

(24.4cm Scale, System Tombeur, Advanced)
Examples: 2012, 2013

Version Comparison
First and second versions of the model fully detailed below, the significant differences being:
Click on a column heading to jump down to version images and detailed description.
2012 2013
Material: Mahogany Walnut
Laminate: 4mm 3.2 & 1.6mm
Height: 13mm 7.5mm
Cursor Grooves: Centre High
Slide Back: Plain Rebate
Cursor Perspex: 3mm 2mm
Cursor Runner Fixing: Machine screws Glue
Cursor Spring Fixing: Machine Screw -
Click on the images for enlargements.
Juggler's Slide Rule - A2 (2012)
Image
Image Summary
System: System Tombeur
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: 2012, October
Features/Notes: Advanced Juggler's slide rule.
Scales (colours as shown)
Front: 1, A [ B, S, CI, 2, C ] D, 3 Back: -
Labels Left: X n(wb), h d x10-2m A [ B, S, CI bs-1, n(wb), t bt x10-1s C ] D v, 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 A, B, C & D
C (1.13) on C
C1 (3.57) on C
vy (4.43) on C
g (9.81) on C
Rulers: -
Features/Notes: Printed on paper with Perspex facing.
1 scale on on upper stock rail (labelled X n(wb)) is a specialist scale of throw weight and hold times 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 rails equal widths (mm) - 13
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 and lower rails (4 in total).
Mid level cursor grooves.
No bevel to top and bottom edges.
Shallow rebate in back for paper tables.
Varnished excluding sliding contact surfaces and 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, two each at left & right ends (4 in total).  Right end screws hidden in logo by filling and painting.
Varnished excluding sliding contact surfaces and Perspex.
Front face width (mm) - 20
Cursor: Single central black hairline.
3mm thick Perspex pane attached to seperate top and bottom runners.
Runners fashioned from laminated 4mm mahogany strip.
Varnished excluding sliding contact surfaces and 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) - 32 x 55
Printing (colours as shown)
Stock: "JUGGLER'S SLIDE RULE" spanning screw on right end of upper rail.
"MADE IN ENGLAND BY C TOMBEUR" spanning screw on right end of lower rail.
Slide: Juggling pattern logo with "SYSTEM TOMBEUR" in centre and "A2" underneath, on right end.
Cursor: -
Labels: On back, summary instructions, formulae and variables, with footer "www.countbelmiro.com"
Instructions
36 page (including cover) booklet with full instructions, examples and care information, which can be seen here.
Box (colours as shown)
Style: None L x W x D mm: -
Material: - Colour: -
Construction: -
Printing: -
Labels: -
Detail Images
Click on the images for enlargements.
Click on the images for enlargements.
Click on the images for enlargements.
Click on the images for enlargements.
Juggler's Slide Rule - A2 (2013)
Image
Image Summary
System: System Tombeur
Specialization: Juggling
Type: Closed frame
Material: Wallnut laminate
Facings: Perspex/paper
Scale Length: 24.4cm No of Scales: 9
Front Length: 282mm Front Width: 46mm
Language: English Origin: England
Date: 2013, June
Features/Notes: Advanced Juggler's slide rule.
Scales (colours as shown)
Front: 1, A [ B, S, CI, 2, C ] D, 3 Back: -
Labels Left: X n(wb), h d x10-2m A [ B, S, CI bs-1, n(wb), t bt x10-1s C ] D v, 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 A, B, C & D
C (1.13) on C
C1 (3.57) on C
vy (4.43) on C
g (9.81) on C
Rulers: -
Features/Notes: Printed on paper with Perspex facing.
1 scale on on upper stock rail (labelled X n(wb)) is a specialist scale of throw weight and hold times 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 1.6mm and 3.2mm thick wallnut strip to make well and slide and cursor grooves.
Upper and lower rails equal widths (mm) - 13
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 and lower rails (4 in total).
High cursor grooves.
No bevel to top and bottom edges.
Shallow rebate in back for paper tables.
Varnished excluding sliding contact surfaces and Perspex.
Length x Width x Height (mm) - 282 x 46 x 7.5
Slide: Single sided
Constructed from laminated 1.6mm wallnut strip to form locating tongue.
Shallow rebate in back to reduce friction.
Front faced with 1mm Perspex.
Paper scales and Perspex fixed with clear double-sided tape and anchored with M1.2 machine screws, two each at left & right ends (4 in total).  Right end screws hidden in logo by filling and painting.
Varnished excluding sliding contact surfaces and Perspex.
Front face width (mm) - 20
Cursor: Single central black hairline.
2mm thick Perspex pane attached to seperate top and bottom runners.
Runners fashioned from laminated 1.6mm and 3.2mm wallnut strip.
Varnished excluding sliding contact surfaces and Perspex.
Steel spring on top runner, mounted at left end.
Width x Height (mm) - 32 x 54
Printing (colours as shown)
Stock: "JUGGLER'S SLIDE RULE" spanning screw on right end of upper rail.
"MADE IN ENGLAND BY C TOMBEUR" spanning screw on right end of lower rail.
Slide: Juggling pattern logo with "SYSTEM TOMBEUR" in centre and "A2" underneath, on right end.
Cursor: -
Labels: On back, summary instructions, formulae and variables, with footer "www.countbelmiro.com"
Instructions
36 page (including cover) booklet with full instructions, examples and care information, which can be seen here.
Box (colours as shown)
Style: None L x W x D mm: -
Material: - Colour: -
Construction: -
Printing: -
Labels: -
Detail Images
Click on the images for enlargements.
Click on the images for enlargements.
Click on the images for enlargements.
Count Belmiro © Copyright January 2013 - July 2015
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