A W Faber "Castell" 386

(12.5cm Scale Pocket rule, System Rietz)

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A W Faber "Castell" 386 (1935)
Image
Image Summary
System: Rietz
Specialization: -
Type: Closed frame
Material: Pearwood
Facings: Celluliod
Scale Length: 12.5cm No of Scales: 9
Front Length: 165mm Front Width: 28.5mm
Language: English Origin: Bavaria
Date: 1935, November
Features/Notes: Pocket rule, magnifying cursor with sliding half-cylinder lens (missing).
Scales (colours as shown)
Front: K, A [ B, C ] D, L Back: [ S, S&T, 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: As units between 1 & 2 on C & D
Gauge Marks: p (3.14) on A, B, C & D
C (1.13) on C
C1 (3.57) on C
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) - 165 x 34 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
Cursor: Aluminium frame, glass pane.
Magnifying cursor with sliding half-cylinder lens (DRP 450304, 1926). (lens missing).
Angled steel(?) flanges attached to the top and bottom runners with 2 rivets each, to hold the lens and allow it to slide.
Square window.
Left end riveted steel spring on top runner.
Three eqidistant full length hairlines.
Width x Height (mm) - 28 x 32
Printing (colours as shown)
Stock: "386" + scales logo + "A.W.FABER" + ""CASTELL"" between lying castles in the well above the split at the right hand end, sans-serif.
"SYSTEM RIETZ" in the well below the split on the right, sans-serif.
"MADE IN BAVARIA." on the bottom centre of the back, sans-serif.
Slide: -
Cursor: "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.
"MADE IN BAVARIA" and "37" stamped on the back of the top runner, sans-serif.
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: 170 x 48 x 24
Material: Cardboard Colour: Black
Construction: 2 part, internal sleeve join.
Faced.
Inside is a cardboard projection which locates on the cursor flanges, securing the cursor in the box to protect the lens.
Printing: scales + "A.W. FABER" ""CASTELL"" logo on the front.
Round indentations on the front either side of the opening.
Labels: None
Detail Images
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