A W Faber "Castell" 380, 4/60/380

(50cm Scale Desktop rule, Enhanced Mannheim)
Examples: c1914-20, 1936

Version Comparison
Early-to-mid and after the numbering first changed versions of the model fully detailed below, differences summarised as follows:
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c1914-20 1936
Model: 380 4/60/380
Material: Mahogany Pearwood
Front Length: 535mm 575mm
Front Width: 32mm 35mm
Front Scales: A [ B, C ] D A [ B, CI, C ] D
Scale Style: Double railway Railway Track
Scale Extensions: - Red
M Gauge Mark: - A & B
C & C1 Gauge Marks: - C
r" & r' Gauge Marks: - C & D
Typeface: Serif Sans-serif
Slide Tension: - Adjustment screws
Width x Height: 38 x 11mm 42 x 12mm
Slide Width: 11.5mm 15mm
Cursor Form: Digit registering Normal
Cursor Hairlines: One Three
Cursor Spring: Centre sprung Left end sprung
Brand & Model: Front Well
"*" or "Scales: * Scales
DRP Labelling: Front -
Origin Labelling: Front -
Tracking Nmemonics: Arrows + short text -
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A W Faber "Castell" 380 (c1914-20)
Image
Image Summary
System: Enhanced Mannheim
Specialization: -
Type: Closed frame
Material: Mahogany
Facings: Celluliod
Scale Length: 50cm No of Scales: 8
Front Length: 535mm Front Width: 32mm
Language: English Origin: Bavaria
Date: c1914-20
Features/Notes: Desktop rule.  At this time the "380" model label on the box indicates that the rule was supplied with the digit registering cursor.
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: As units between 1 & 2 on A, B, C & D
Units between 10 and 20 on A & B
0.5's as unit between 2 and 5 on C & D
Gauge Marks: p (3.14) on A, B C & D Rulers: inch on top edge
cm on bottom edge
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) - 535 x 38 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) - 11.5
Cursor: Aluminium frame, glass pane.
+/- 6 digit registering (DRGM 116832, 1899) with pointer to track magnitudes in calculations, 'flat' rivets.
Square window.
Centre riveted steel spring on top runner.
Single central full length hairline.
Width x Height (mm) - 49 x 36
Printing (colours as shown)
Stock: "380 * A.W. FABER" + ""CASTELL"" between lying castles on front lower rail in the centre sans-serif.
"D. R. PATENT. No 206428." and "MADE IN BAVARIA" on front lower rail towards the left, sans-serif.
"Quot. +1" and "Prod. -1" on the left and right ends respectively of the front lower stock rail, sans-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: Square L x W x D mm: 540 x 45 x 22
Material: Cardboard Colour: Black
Construction: 2 part, internal sleeve join.
Faced.
Printing: "A.W. FABER." and underneath "D.R.P. No 206428" and "MADE IN BAVARIA." to the left and right respectively, in the centre on the front.
Labels: "380" on white model number label with broken black border on right end.
Detail Images
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A W Faber "Castell" 4/60/380 (1936)
Image
Image Summary
System: Enhanced Mannheim
Specialization: -
Type: Closed frame
Material: Pearwood
Facings: Celluliod
Scale Length: 50cm No of Scales: 8
Front Length: 575mm Front Width: 35mm
Language: German Origin: -
Date: 1936, May
Features/Notes: Desktop rule, model numbering continuation from '380'.
Scales (colours as shown)
Front: A [ B, CI, 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, CI, C & D beyond 1 & 10 Decimals: As units between 1 & 2 on A, B, CI, C & D
Units between 10 and 20 on A & B
0.5's as unit between 2 and 5 on CI, C & D
Gauge Marks: p (3.14) on A, B, CI, 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: cm on top edge
1:25 on bottom edge, labelled.
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).
Tension adjustment screws in bottom edge (DRP 365637, 1922).
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) - 575 x 42 x 12
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) - 15
Cursor: Aluminium frame, glass pane.
Square window.
Left end riveted steel spring on top runner.
Three eqidistant full length hairlines.
Width x Height (mm) - 41 x 38
Printing (colours as shown)
Stock: "4/60/380" + scales logo + "A.W. FABER" + ""CASTELL"" between lying castles in the centre of the well above the split, sans-serif.
Slide: -
Cursor: "q" stamped on the front of the top runner above the left hairline.
"d" stamped on the edge of the bottom runner below the right hairline.
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: ??? x 55 x 23
Material: Cardboard Colour: Black
Construction: 2 part, internal sleeve join (right end part missing).
Faced.
Printing: scales + "A.W. FABER" ""CASTELL"" logo on the front.
Round indentations on the front either side of the opening.
Labels: none seen (ends taped or missing).
Detail Images
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