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A W Faber 350
(25cm Scale, Enhanced Mannheim, All-wood)
Examples: c1896-91, c1896-92
Version Comparison
Two virtually identical unlabelled early examples of the model fully detailed below, differences summarised as follows:
Click on a column heading to jump down to version images and detailed description.
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c1896-91 |
c1896-92 |
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Cursor Screws:
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2.5mm
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3.5mm
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Paper Tables:
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Short of end
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To left edge
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Click on the images for enlargements.
A W Faber 350 (c1896-91) |
x_b.jpg)
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_a.jpg)
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Summary
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System:
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Enhanced Mannheim
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Specialization:
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-
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Type:
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Closed frame
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Material:
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Boxwood
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Facings:
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None
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Scale Length:
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25cm
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No of Scales:
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7
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Front Length:
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260mm
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Front Width:
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27.5mm
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Language:
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German
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Origin:
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-
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Date:
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c1896-9
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Features/Notes:
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Unlabelled model.
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Scales (colours as shown)
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Front:
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A [ B, C ] D
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Back:
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[ S, L, T ]
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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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-
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Labels Right:
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All, as scales
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Style:
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Railway track (double)
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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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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
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Gauge Marks:
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p (3.14) on A & B
C (1.13) on C
C1 (3.57) on C
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Rulers:
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cm on top edge
cm on bottom edge
cm continuation in well for longer measurements
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Features/Notes:
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Ruler labels are above the cursor groove and tick marks below it on top and bottom edges.
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Construction
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Stock:
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Single piece solid stock.
Right viewing cutout with index marks, in back for reverse of slide.
Bevelled top edge, square bottom edge.
Low cursor grooves, top edge cut angled, bottom edge cut parallel to front face.
Shallow rebate in back .
Length x Width x Height (mm) - 260 x 32 x 9
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Slide:
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Double sided
Front face width (mm) - 12
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Cursor:
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Nickel plated brass frame, glass pane.
Angled top runner to fit bevel and cursor groove.
Rounded window.
Two small screws on the right hand side of the frame and a bump in the middle of the left side for pane, hence hairline, alignment.
Centre riveted steel spring on top runner.
Single central full length hairline.
Width x Height (mm) - 31 x 32 (including sloped top runner)
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Printing (colours as shown)
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Stock:
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"A.W.FABER." in centre of front bottom rail, serif.
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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, paper table featuring conversions and mathematical and physical constants.
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Instructions
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None
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Box (colours as shown)
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Style:
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Not present
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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.
Click on the images for enlargements.
Click on the images for enlargements.
Click on the images for enlargements.
Click on the images for enlargements.
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Click on the images for enlargements.
A W Faber 350 (c1896-92) |
_2x_b.jpg)
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_2_a.jpg)
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Summary
|
|
System:
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Enhanced Mannheim
|
|
Specialization:
|
-
|
|
Type:
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Closed frame
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|
Material:
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Boxwood
|
|
Facings:
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None
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|
Scale Length:
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25cm
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No of Scales:
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7
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Front Length:
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260mm
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Front Width:
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27.5mm
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|
Language:
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German
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Origin:
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-
|
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Date:
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c1896-9
|
|
Features/Notes:
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Unlabelled model.
|
|
Scales (colours as shown)
|
|
Front:
|
A [ B, C ] D
|
Back:
|
[ S, L, T ]
|
|
Labels Left:
|
-
|
Labels Left:
|
-
|
|
Labels Right:
|
-
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Labels Right:
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All, as scales
|
|
Style:
|
Railway track (double)
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Typeface:
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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
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Gauge Marks:
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p (3.14) on A & B
C (1.13) on C
C1 (3.57) on C
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Rulers:
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cm on top edge
cm on bottom edge
cm continuation in well for longer measurements
|
|
Features/Notes:
|
Ruler labels are above the cursor groove and tick marks below it on top and bottom edges.
|
|
Construction
|
|
Stock:
|
Single piece solid stock.
Right viewing cutout with index marks, in back for reverse of slide.
Bevelled top edge, square bottom edge.
Low cursor grooves, top edge cut angled, bottom edge cut parallel to front face.
Shallow rebate in back .
Length x Width x Height (mm) - 260 x 32 x 9
|
|
Slide:
|
Double sided
Front face width (mm) - 12
|
Cursor:
|
Nickel plated brass frame, glass pane.
Angled top runner to fit bevel and cursor groove.
Rounded window.
Two small screws on the right hand side of the frame and a bump in the middle of the left side for pane, hence hairline, alignment.
Centre riveted steel spring on top runner.
Single central full length hairline.
Width x Height (mm) - 31 x 32 (including sloped top runner)
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Printing (colours as shown)
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|
Stock:
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"A.W.FABER." in centre of front bottom rail, serif.
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|
Slide:
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-
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Cursor:
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-
|
|
Labels:
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On back, paper table featuring conversions and mathematical and physical constants.
|
|
Instructions
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None
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Box (colours as shown)
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Style:
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Square
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L x W x D mm:
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268 x 40 x 18
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Material:
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Cardboard
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Colour:
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Black
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Construction:
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2 part, internal sleeve join.
Cloth covered.
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Printing:
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"Rechenstab" above "von" above "A.W. FABER." on the front in the centre.
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Labels:
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None seen (ends damaged).
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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.
Click on the images for enlargements.
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