A W Faber "Castell" 398

(25cm Scale, Electro, Enhanced)

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A W Faber "Castell" 398 (1929)
Image
Image Summary
System: Electro
Specialization: Electrical & Mechanical Engineers
Type: Closed frame
Material: Pearwood
Facings: Celluliod
Scale Length: 25cm No of Scales: 13
Front Length: 305mm Front Width: 35mm
Language: English Origin: Bavaria
Date: 1929, December
Features/Notes: -
Scales (colours as shown)
Front: LL2, A [ B, CI, C ] D, LL3 | K 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 CI, C & D
Gauge Marks: p (3.14) on A, B, C & D
M (1/p=0.318) on A & B
746 on A & B
C (1.13) on C
C1 (3.57) on C
W (3.32) on D
R (5.53) on D
Rulers: inch on top edge
Features/Notes: "Dynamo"/"Motor n=%" and "Volt" scales, labelled, in the well. Volt scale numbers and label in red.
Electrical resistance and power load (DRGM 881735, 1924) measured on the A scale.
Numbers on CI scale printed in red.
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) - 305 x 41 x 11
Slide: Double sided
Braced with longitudinal metal strips (DRP 206428, 1908)
Aluminium index edge at the left end (DRGM 247514, 1905) secured with two rivets.
Celluliod faced on both sides, secured with wooden pins (DRGM 371190, 1908)
Shorter than stock, front face length x width (mm) - 295 x 14.5
Cursor: Aluminium frame, glass pane.
Tab on bottom runner with index for K scale.
Square window.
Left end riveted steel spring on top runner.
Three non-eqidistant full length hairlines.
Width x Height (mm) - 41 x 39
Printing (colours as shown)
Stock: "398" + scales logo + "A.W. FABER" + ""CASTELL"" between lying castles in the well above the split towards the right, sans-serif.
"D.R. PATENT. No 206428" and underneath "D.R.G.M. No 881735" in the well below the split towards the right, sans-serif.
"MADE IN BAVARIA." on the top centre of the back, sans-serif.
"Quot. +1" and "Prod. -1" on the left and right ends respectively of the front lower stock rail, sans-serif.
"10 Amp." & "K.W." at the left and right ends respectively of the A scale.
Slide: "10 m 10 mm2" & "H.P." at the left and right ends respectively of the B scale.
Cursor: "MADE IN BAVARIA" stamped on the bottom edge, sans-serif.
"W" stamped on the front of the top runner above the left hairline.
"HP" and "s" stamped on the front of the top runner above the centre 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: Rounded L x W x D mm: 315 x 55 x 20
Material: Cardboard Colour: Black
Construction: 2 part, internal sleeve join.
Faced.
Metal braced ends.
Printing: "A.W. FABER" and underneath scales logo and "D.R.P. No 206428" beneath that on the front.
Labels: Large red/green on white advertising label on back.
"398" and smaller underneath "MADE IN BAVARIA" on black, on right end.
Detail Images
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