Slide Rules

Aristo Bischolar 0906
Arist Trilog 0908
Castell Rietz 57/58
A.W. Faber "Castell" 369
Norma Technicus 100
Norma Mercuria 100
Faber-Castell D-STAB 52/82
Addiator Duplex

Aristo Bischolar 0906


Acquired	20.10.2002
Manufactured	Germany, plastic
Accessories	Plastic box Booklet "Anleitung zum Rechenstab Bischolar 0906/Bischolar, LL 0906 LL" (German) Original cardboard box
Condition	Mint out of the box
Scales	On the front: Top: x³, x² - Central: x², 1/x², sin, x - Bottom: x, lg x, sqrt(1-x²) On the back: Top: arc, tan (2x), pi·x - Central: pi·x, 1 / pi·x, 1/x, x - Bottom: x, 1/x cos & sin On the slider a kW to PS conversion mark
Dimensions	Length 33 cm, width 4.4 cm

Aristo Trilog 0908


Acquired	During high school
Manufactured	Germany, plastic
Accessories	Plastic box with name tag Plastic sheet with various math formulas labelled "Aristo 1365"
Condition	Excellent
Scales	On the front: Top: cot & tan (2x), x² - Central: x², 1/x², 1/x, x - Bottom: x, sqrt(1 - x²), cos & sin, arc On the back: Top: e^0.01x, e^0.1x, e^x, pi·x - Central: pi·x, 1 / pi·x, 1/x, x - Bottom: x, lg x, x³ On the slider a kW to PS conversion mark
Dimensions	Length 33 cm, width 4.4 cm

Castell Rietz 57/87


Acquired	Summer 2002
Manufactured	Germany, plastic
Accessories	Plastic box with number "1,60" written on it (a price tag) and the label "Faber Castell 111/87"
Condition	Average. Behin the inner rule a label with the name "Hofmeier" written on it.
Scales	On the edge side a cm rule. Top: X³ and X² - Central front: X², 1/X, X - Central back: sin0.1X, arc0.01X tan0.1X - Bottom: X, lgX
Dimensions	Length 30 cm, width 4 cm

A.W. Faber "Castell" 369


Acquired	unknown
Manufactured	Germany, wood.
Accessories	none
Condition	Very good.
Scales	On the top edge a cm rule Top: x² - Central front: x², x - Central back: sin, lg, tan- Bottom: x On the bottom edge a cm rule
Comment	Behind the rule the manufacturer's name and the label "D.R. Patent No 200423". On the back a variety of physical and material constants.
Dimensions	Length 15.2 cm, width 2.9 cm

Norma Technicus 100


Acquired	Around 2000
Manufactured	Germany, plastic & metal
Accessories	Protective plastic sleeve Instruction booklet "NORMA Rechenscheiben" (German, 25 pages)
Condition	Excellent
Scales	From outward to inward: X³, X, X, 1/X, X²
Dimensions	Diameter 10.6 cm, thickness 0.6 cm

Norma Mercuria 100


Acquired	25.1.2017,courtesy of Carsten Bank
Manufactured	Germany
Accessories	Protective plastic sleeve Instruction booklet "NORMA Rechenscheiben" (German, 34 pages)
Condition	Very good
Scales	From outward to inward: X, X, percent addition/substraction, conversion markers for imperial units
Dimensions	Diameter 10.6 cm, thickness 0.6 cm

Faber-Castell D-STAB 52/82


Acquired	25.1.2017, courtesy of Carsten Bank
Manufactured
Accessories	Original cardboard box. Plastic sleeve. Paper sheet "Symbole aus der Mengenlehre", paper sheet which mentions some new scales and marks which are not present. Booklet "Anleitung für den gebrauch unseres Schulrechenstabes CASTELL-D-Stab" (German, 16 pages).
Condition	Excellent
Scales	Front: L, K, A, B, CI, C, D, LL1 (e^0.01X), LL2 (e^0.1X), LL3 (e^X) Back: T1 (tan 0.01X and cot), T2 (tan X and cot), DF, CF, CIF, CI, C, D, S, ST, P
Dimensions	Length 32.5cm, width 4.2cm

Addiator Duplex


Acquired	25.1.2017, courtesy of Carsten Bank
Manufactured	Germany
Accessories	Protective plastic sleeve, Instruction sheet "Addiator Gebrauchsanleitung" (German, 6 pages), calculator pen
Condition	Very good
Scales	9 digit addition on front, 9 digit subtraction on back
Dimensions	Width 8.3cm, height 12.7cm

Slide Rule Scale Labelling

A	Steady x²	ST	arc
B	Sliding x²	T	tan
BI	1/x²	LL	e^x
CI	1/x	DF	Steady pi·x
C	Sliding x	CF	Sliding pi·x
D	Steady x	CIF	1 / (pi·x)
P	sqrt(1 - x²)	L	lg x
S	sin		...and many more.

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