A W Faber 339

(25cm Scale, Mannheim, School use)
Examples: 1928, 1935

Version Comparison
Mid and late versions of the model fully detailed below, differences summarised as follows:
Click on a column heading to jump down to version images and detailed description.
1928 1935
Front Length: 280mm 295mm
Height: 6mm 9mm
Scale Labels: - Left & Right
p Gauge Mark: A & B A, B, C & D
Cm Ruler: - Back, upper edge
Inch Ruler: - Back, lower edge
Stock Form: Single piece 2-part
Stock Flex: - Steel sprung
Celluliod Facing: Front only, no pins Front, back, back of slide & well, secured with wooden pins.
Cursor Grooves: Single Double
Cursor: Plastic, single piece Free view
DRGM Labelling: - In well
Origin Labelling: On back In well
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A W Faber 339 (1928)
Image
Image Summary
System: Mannheim
Specialization: School use
Type: Closed frame
Material: Maple
Facings: Celluliod
Scale Length: 25cm No of Scales: 4
Front Length: 280mm Front Width: 27.5mm
Language: English Origin: Bavaria
Date: 1928, October
Features/Notes: -
Scales (colours as shown)
Front: A [ B, C ] D Back: -
Labels Left: - Labels Left: -
Labels Right: - Labels Right: -
Style: Normal Typeface: Serif
Extensions: - Decimals: As units between 1 & 2 on C & D
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: -
Features/Notes: -
Construction
Stock: Single piece solid stock.
Braced with longitudinal metal strips (DRP 206428, 1908).
Square top and bottom edges.
High cursor grooves both cut parallel to front face.
Flat back.
Front celluloid faced, secured with wooden pins (DRGM 371190, 1908).
Length x Width x Height (mm) - 380 x 27.5 x 6
Slide: Single sided
Braced with longitudinal metal strips (DRP 206428, 1908)
Celluliod faced on front only, secured with wooden pins (DRGM 371190, 1908)
Front face width (mm) - 12
Cursor: Single piece moulded plastic.
Left end riveted steel spring on top runner.
Single central full length hairline.
Width x Height (mm) - 29 x 30
Printing (colours as shown)
Stock: "339" + scales logo + "A.W. FABER" in the centre of the well, sans-serif.
"MADE IN BAVARIA." in the centre of back, sans serif.
Slide: -
Cursor: -
Labels: None
Instructions
None
Box (colours as shown)
Style: Not present L x W x D mm: -
Material: - Colour: -
Construction: -
Printing: -
Labels: -
Detail Images
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A W Faber 339 (1935)
Image
Image Summary
System: Mannheim
Specialization: School use
Type: Closed frame
Material: Maple
Facings: Celluliod
Scale Length: 25cm No of Scales: 4
Front Length: 295mm Front Width: 27.5mm
Language: English Origin: Bavaria
Date: 1935, April
Features/Notes: -
Scales (colours as shown)
Front: A [ B, C ] D Back: -
Labels Left: All, as scales Labels Left: -
Labels Right: All, as scales Labels Right: -
Style: Normal Typeface: Serif
Extensions: - Decimals: As units between 1 & 2 on C & D
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
Rulers: cm on back, upper edge
inch on back, lower 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).
Square top and bottom edges.
Double cursor grooves enabling cursor to be turned around and used on the back.
Flat back.
Front, back and well celluloid faced.
Length x Width x Height (mm) - 295 x 27.5 x 9
Slide: Single sided
Braced with longitudinal metal strips (DRP 206428, 1908)
Celluliod faced on both sides
Front face width (mm) - 12
Cursor: Freeview (possibly DRP 465658, 1927), glass pane.
Top and bottom metal runners (plated?).
Left end riveted steel spring on top runner.
Single central full length hairline.
Width x Height (mm) - 29 x 35
Printing (colours as shown)
Stock: "339" + scales logo + "A.W. FABER" in centre of well above split, sans-serif.
"D.R.G.M." in the centre of the well below the split, sans-serif.
"MADE IN BAVARIA" stamped in the well, above the split towards the right end , sans-serif.
Slide: -
Cursor: "1" and "MADE IN BAVARIA" stamped on the back of the top runner, sans-serif.
Labels: None
Instructions
None
Box (colours as shown)
Style: Square L x W x D mm: 308 x 45 x 17
Material: Cardboard Colour: Black
Construction: 2 part, internal sleeve join.
Faced.
Printing: scales logo + "A.W. FABER'S" and underneath "Calculating Rule for School use" on the front.
Round indentations on the front either side of the opening.
Labels: "51/39" and underneath in smaller type "MADE IN BAVARIA" on black, on both ends.
Small, third party, red bordered white label on right end of back, with handwriten "7=6".
Detail Images
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