A W Faber & A W Faber "Castell" 363

(25cm Scale, Enhanced Mannheim, Decmial figuring)
Examples: c1904, c1908-9, 1933

Version Comparison
Three versions of the model from early to late fully detailed below, differences summarised as follows:
Click on a column heading to jump down to version images and detailed description.
c1903-4 c1908-9 1933
Branding: AW Faber AW Faber "Castell"
Material: Boxwood Pearwood
Front Length: 280mm 295mm
Scale Style: Double railway Railway track
Typeface: Serif Sans-serif
Scale Extensions: - Red
p Gauge Mark: A & B A, B, C & D
M Gauge Mark: - A & B
C & C1 Gauge Marks: C C & D C
r" & r' Gauge Marks: - C & D
Stock Form: Single piece 2-part
Stock Flex: Longitudinal slits Celluloid sprung Steel sprung
Slide Springs: Below groove In groove -
Bracing: - Longitudinal, metal
Celluliod Fixing: - Wooden pins
Cursor Grooves: Low High
Width x Height: 33 x 9mm 34 x 11mm
Cursor Profile: Centre sprung Wide, left end sprung
Cursor Window: Round cornders Square corners
Brand & Model: Gold brand, front centre Black brand & model, front centre Black brand & model, well centre
"*" or "Scales": - * Scales
Tracking Nmemonics: Arrows + full text Arrows + short text -
Origin Labelling: - Front right Back centre
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A W Faber 363 (c1904)
Image
Image Summary
System: Enhanced Mannheim
Specialization: -
Type: Closed frame
Material: Boxwood
Facings: Celluliod
Scale Length: 25cm No of Scales: 7
Front Length: 280mm Front Width: 27.5mm
Language: English Origin: Bavaria
Date: c1904
Features/Notes: Unlabelled model.
Scales (colours as shown)
Front: A [ B, C ] D Back: [ S, L, T ]
Labels Left: - Labels Left: All, as scales
Labels Right: - Labels Right: All, as scales
Style: Railway track (double) Typeface: Serif
Extensions: - Decimals: Tenths between 1 & 2 on A, B, C & D
Units between 10 and 20 on A & B
0.5's between 2 & 10 on A, B, C & D
5's between 20 and 100 on A & B
Gauge Marks: p (3.14) on A & B
C (1.13) on C
C1 (3.57) on C
Rulers: inch on top edge
cm on bottom edge
cm continuation in well for longer measurements
Features/Notes: -
Construction
Stock: Single piece solid stock with 2 longitudinal slits cut in well.
Boxwood springs in the well, below the slide groove of the upper rail of the stock (DRGM 98350, 1898).
Left and right viewing cutouts with index marks, in back for reverse of slide.
Bevelled top edge, square bottom edge.
High cursor grooves both cut parallel to front face.
Shallow rebate in back .
Front, well, top and bottom edges celluloid faced.
Length x Width x Height (mm) - 280 x 33 x 9
Slide: Double sided
Celluliod faced on both sides
Front face width (mm) - 11.5
Cursor: Aluminium frame, glass pane.
Rounded window.
Centre riveted steel spring on top runner (broken).
Single central full length hairline.
Width x Height (mm) - 30 x 32
Printing (colours as shown)
Stock: "A.W.FABER." and "MADE IN BAVARIA." in centre of front bottom rail, sans-serif.
"QUOTIENT +1" and "PRODUCT -1" on the left and right ends respectively of the front lower stock rail, serif.
+|- arrow symbols on the left and right ends of the front upper stock rail.
Slide: -
Cursor: -
Labels: On back, paper table featuring conversions and mathematical and physical constants.
Instructions
None
Box (colours as shown)
Style: Flat-round L x W x D mm: 290 x 45 x 18
Material: Cardboard Colour: Black
Construction: 2 part, internal sleeve join.
Cloth covered.
Metal braced ends.
Printing: "A.W. FABER'S." in an arch above "CALCULATING RULE", then "LONDON" on the front.
"MADE IN BAVARIA." smaller underneath to the left.
Labels: Large advertising on back. Gold on black, ornate borders.
Ends damaged.
Detail Images
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A W Faber 363 (c1908-9)
Image
Image Summary
System: Enhanced Mannheim
Specialization: -
Type: Closed frame
Material: Boxwood
Facings: Celluliod
Scale Length: 25cm No of Scales: 7
Front Length: 280mm Front Width: 27.5mm
Language: English Origin: Bavaria
Date: c1908-9
Features/Notes: Scale numbers with decimals.
Scales (colours as shown)
Front: A [ B, C ] D Back: [ S, L, T ]
Labels Left: - Labels Left: All, as scales
Labels Right: - Labels Right: All, as scales
Style: Railway track Typeface: Serif
Extensions: - Decimals: Tenths between 1 & 2 on A, B, C & D
Units between 10 and 20 on A & B
0.5's between 2 & 10 on A, B, C & D
5's between 20 and 100 on A & B
Gauge Marks: p (3.14) on A & B
M (1/p=0.318) on A & B
C (1.13) on C & D
C1 (3.57) on C & D
Rulers: inch on top edge
cm on bottom edge
cm continuation in well for longer measurements
Features/Notes: -
Construction
Stock: 2 part split stock joined with celluloid (DRGM 306107, 1907).
Braced with longitudinal metal strips (DRP 206428, 1908).
Boxwood springs in the well, in the slide groove of the upper rail of the stock (DRGM 98350, 1898).
Left and right viewing cutouts with index marks, in back for reverse of slide.
Bevelled top edge, square bottom edge.
High cursor grooves both cut parallel to front face.
Shallow rebate in back .
Front, well, top and bottom edges celluloid faced, secured with wooden pins (DRGM 371190, 1908).
Length x Width x Height (mm) - 280 x 33 x 9
Slide: Double sided
Braced with longitudinal metal strips (DRP 206428, 1908)
Celluliod faced on both sides, secured with wooden pins (DRGM 371190, 1908)
Front face width (mm) - 11.5
Cursor: Aluminium frame, glass pane.
Square window.
Centre riveted steel spring on top runner.
Single central full length hairline.
Width x Height (mm) - 30 x 30
Printing (colours as shown)
Stock: "363 * A.W. FABER.", "D.R. PATENT. No 206428." & "D.R.G.M. 371190." on front lower rail in the centre, sans-serif.
"MADE IN BAVARIA" on front bottom rail towards the right, sans-serif.
"Quot. +1" and "Prod. -1" on the left and right ends respectively of the front lower stock rail, sans-serif.
Slide: -
Cursor: -
Labels: On back, paper table featuring conversions and mathematical and physical constants.
Instructions
None
Box (colours as shown)
Style: Rounded L x W x D mm: 290 x 45 x 27
Material: Cardboard Colour: Black
Construction: 2 part, internal sleeve join.
Cloth covered.
Metal braced ends.
Printing: "A.W. FABER." and underneath "D.R.P. No 206428" followed by "MADE IN BAVARIA." on the front.
Labels: Large red/green on white advertising label on back.
Possible remnant of model number on right end (ends damaged).
Detail Images
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A W Faber "Castell" 363 (1933)
Image
Image Summary
System: Enhanced Mannheim
Specialization: -
Type: Closed frame
Material: Pearwood
Facings: Celluliod
Scale Length: 25cm No of Scales: 7
Front Length: 295mm Front Width: 27.5mm
Language: English Origin: Bavaria
Date: 1933, June
Features/Notes: Scale numbers with decimals.
Scales (colours as shown)
Front: A [ B, C ] D Back: [ S, L, T ]
Labels Left: - Labels Left: All, as scales
Labels Right: - Labels Right: All, as scales
Style: Railway track Typeface: Sans-serif
Extensions: A, B, C & D beyond 1 & 10 in red Decimals: Tenths between 1 & 2 on A, B, C & D
Units between 10 and 20 on A & B
0.5's between 2 & 10 on A, B, C & D
5's between 20 and 100 on A & B
Gauge Marks: p (3.14) on A, B, C & D
M (1/p=0.318) on A & B
C (1.13) on C
C1 (3.57) on C
r" (2063) on C & D
r' (3438) on C & D
Rulers: inch on top edge
cm on bottom edge
cm continuation in well above the split for longer measurements
Features/Notes: -
Construction
Stock: 2 part split stock joined with steel springs (DRGM 522689, 1912; DRGM 452965, 1911).
Braced with longitudinal metal strips (DRP 206428, 1908).
Left and right viewing cutouts with index marks, in back for reverse of slide.
Bevelled top edge, square bottom edge.
High cursor grooves both cut parallel to front face.
Shallow rebate in back .
Front, well, top and bottom edges celluloid faced, secured with wooden pins (DRGM 371190, 1908).
Length x Width x Height (mm) - 295 x 34 x 11
Slide: Double sided
Braced with longitudinal metal strips (DRP 206428, 1908)
Celluliod faced on both sides, secured with wooden pins (DRGM 371190, 1908)
Front face width (mm) - 12
Cursor: Aluminium frame, glass pane.
Extra wide.
Square window.
Left end riveted steel spring on top runner.
Single central full length hairline.
Width x Height (mm) - 41 x 31
Printing (colours as shown)
Stock: "363" + scales logo + "A.W. FABER" + ""CASTELL"" between lying castles in the centre of the well below the split, sans-serif.
"D.R.P." in the well below the split towards the right, sans-serif.
"MADE IN BAVARIA." on the bottom centre of the back, sans-serif.
Slide: -
Cursor: "MADE IN BAVARIA" stamped on the bottom edge, sans-serif.
"1" stamped on the top edge
Labels: On back, paper table featuring conversions and mathematical and physical constants.
Instructions
None
Box (colours as shown)
Style: Square L x W x D mm: 303 x 42 x 19
Material: Cardboard Colour: Black
Construction: 2 part, internal sleeve join.
Faced.
Printing: "A.W. FABER" and underneath scales logo then "D.R.P." beneath that on the front.
Round indentations on the front either side of the opening.
Labels: "363" and "MADE IN BAVARIA" smaller underneath on black, on right end.
Detail Images
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