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Juggling Slide Rule - Simple
(24.4cm Scale, Prototype)
Click on the images for enlargements.
Juggling Slide Rule - Simple (2011) |
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Summary
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System:
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System Tombeur prototype
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Specialization:
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Juggling
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Type:
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Closed frame
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Material:
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Mahogany laminate
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Facings:
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Perspex/paper
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Scale Length:
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24.4cm
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No of Scales:
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6
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Front Length:
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270mm
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Front Width:
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36mm
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Language:
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English
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Origin:
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England
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Date:
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2011, October
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Features/Notes:
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Basic Juggler's slide rule, superceded by model S2.
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Scales (colours as shown)
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Front:
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A, A [ C, C ] §1, §2 |
Back:
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-
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Labels Left:
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-
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Labels Left:
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-
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Labels Right:
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HEIGHT [ BEAT TIME ] BALLS/THROW
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Labels Right:
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-
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Style:
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Railway track
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Typeface:
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Serif
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Extensions:
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-
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Decimals:
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Integers on C labelled as tenths
Tenths between 1 & 2 on C labelled as hundredths
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Gauge Marks:
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-
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Rulers:
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-
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Features/Notes:
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3 distinct scales since each of 'HEIGHT', 'BEAT TIME' and 'BALLS/THROW' are double scales.
Printed on paper with Perspex facing.
C scale numbers are labelled as x/10
§1 & §2 scales (labelled 'BALLS/THROW') are the same specialist index scale of throw weights in a juggling pattern.
Labels are printed to the right of the centre screws.
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Construction
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Stock:
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Solid stock constructed from laminated 4mm thick mahogany strip to make well and slide and cursor grooves.
Square top and bottom edges.
Mid level cursor grooves.
Shallow rebate in back .
Front faced with 1mm Perspex.
Paper scales and Perspex fixed with clear glue and anchored with M1.2 machine screws, one each at left end, centre and right end of each stock rail (6 in total).
Upper and lower rails equal widths (mm) - 12
Fully varnished (excluding Perspex).
Length x Width x Height (mm) - 270 x 36 x 13
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Slide:
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Single sided
Constructed from laminated 4mm mahogany strip to form locating tongue.
Front faced with 1mm Perspex.
Paper scales and Perspex fixed with clear glue and anchored with M1.2 machine screws, one each at left end, centre and right end (3 in total).
Fully varnished (excluding Perspex).
Front face width (mm) - 12
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Cursor:
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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 machhine screw.
Single central full length hairline.
Width x Height (mm) - 19 x 48
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Printing (colours as shown)
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Stock:
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-
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Slide:
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-
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Cursor:
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-
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Labels:
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On back, summary instructions with footer "SIMPLE JUGGLING SLIDE RULE - COLIN TOMBEUR OCT 2011"
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Instructions
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Guide to Simple and Complex Juggling slide rules can be downloaded from the link above
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Box (colours as shown)
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Style:
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None
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L x W x D mm:
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-
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Material:
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-
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Colour:
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-
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Construction:
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-
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Printing:
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-
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Labels:
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-
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Detail Images
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Click on the images for enlargements.
Click on the images for enlargements.
Click on the images for enlargements.
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