THE SLIDE RULE TRADING CO., Paul Ross
 

Parts for Dietzgen Slide Rules

We don't carry parts for Dietzgen slide rules.  The problem is that many Dietzgen rules were manufactured by other companies who used their own cursor designs and construction details.  Those manufacturers changed from time to time; cursors were rarely interchangeable between one Dietzgen model and another or even between two specimens of the same model manufactured at different times.


Parts for Pickett Slide Rules

Here is a table of Pickett slide rule part numbers we can supply.  Be careful; models with and without the "N" prefix take different parts.  However, the suffix "T" ("true color" white) or "ES" ("eye saver" yellow) merely denotes the body color of the slide rule; it has nothing to do with the physical dimensions of the rule.  Ignore the T/ES suffix when determining part numbers.
Rule thickness
1/10-inch thick
1/10-inch thick
5/32-inch thick

Rule width (inches)
2 inches 1-1/2 inches 1-1/4 inches 1 inch

Model number
N2
N3
N4
N500
N510
N800
N803
N901
N902
N903
N904
N1010
N1011
N200
N300
N400
N600
N1006
N62
2
3
4
6
500
510
800
803
901
902
903
1010
200
300
400
500
600
1006
2
3
4
6
500
510
800
901
902
903
1000
1010
Price
Complete Cursor  -
2
3
4
5
-
-
8
9
-
-
$50 
Cursor Spring -
-
-
-
-
-
-
-
13
13
13
$5
Top Cursor Bar
14
15
16
17
18
19
20
21
22
23
24
$5
Bottom Cursor Bar
25
26
27
28
29
30
31
32
33
34
35
$5
Window Only
-
-
38
-
-
-
-
-
-
-
46
$16
Cursor Screw
47
47
47
47
48
48
48
48
-
-
-
$3
End Plate Screw & Nut (2 items) -
-
-
51
52
52
52
53
-
-
-
$12

 

Parts for Relay and Ricoh Slide Rules

The Relay Industrial Company (also know as "San Ai Keiki") was the second largest manufacturer of bamboo slide rules in Japan after World War II.  The company was purchased by, and the name changed to, Ricoh in the 1960s.  Relay/Ricoh bamboo slide rules were marketed under various brand names including Alvin, Compass, Dietzgen, Engineer's, Jason, Lafayette, Lutz, Micronta, Olson, Pickett, Relay, Ricoh, San Ai, Sans & Streiffe, SIC, Skyline, Wallace and Wallace and others.  They frequently did not carry any Relay or Ricoh identification and can be difficult to differentiate from Hemmi-made bamboo rules.  There are two sure ways to tell a Relay/Ricoh bamboo rule from a Hemmi rule: 1. R/R bamboo duplex rules always have plastic cursor lenses whereas Hemmi bamboo duplex rules always have glass lenses.  (This doesn't help identify the manufacturer of closed-body rules; both manufacturers used both glass and plastic on their closed-body rules.)   2. Hemmi rules always carry the Hemmi brand name somewhere--sometimes just stamped into the cursor.  If it's not marked "Hemmi" somewhere, it's R/R.

Quantities are limited (sometimes only one).   Email us if you need something not on this list or if you're not sure what you need.

Fits Item Part No. Price
Closed body R/R rules with 17mm face width including model 403 and others.  Complete Cursor, flat Pic RR1472
$25 New
Closed body R/R rules with 19mm face width.  Complete cursor, flat RR1464
$20 New
Cursor with detachable magnifier   Pic RR1464M
$35 New
Closed body R/R rules with 15/16-inch (23.8mm) face width. Complete cursor, flat RR1473
$25 New
Closed body R/R rules with 28 mm face width. Complete cursor, flat   Pic RR1471
$25 New
Closed body R/R rules with 34 mm face width. Complete cursor, flat RR1471W
$35 New
Old Style Duplex Cursors for 1-3/4 and 1-5/8-inch rules. Cursor Screw Post, two-piece Pic RR1S $12 Used
Lens, 1-5/8 inches wide   Pic RR5 $10 Replacement
Lens , 1-3/4 inches wide   Pic RR7 $10 Replacement
Top cursor bar with spring Pic RR1B $5 Used
Bottom cursor bar, no spring   Pic RR1B $4 Used
New Style Cursors for Duplex Rules. See specific rule width, below.
15/16-inch (23.8 mm) wide duplex rules with new style cursors. Complete Cursor   Pic RR20
$35 New
Lens, Factory Original RR20L
$16 New
Top Bar with Spring RR2B
$8 New
Botom Bar, no Spring RR2B
$5 New
Cursor Screw, Chrome RR2S
$3 New
1-3/8-inch (35 mm) wide duplex rules with new style cursors. Complete Cursor Pic RR25
$35 New
Lens, Factory Original RR25L
$16 New
Top Bar with Spring RR2B
$8 New
Bottom Bar, no Spring RR2B
$5 New
Cursor Screw, Chrome RR2S
$3 New
1-5/8-inch (40 mm) wide duplex rules with new style cursors including, but not limited to  R/R 100, 150, 152, 153, 154, 156, 252, DT-1015; Alvin 1150; Compass 1321; Dietzgen 1737;  Jason 802; Lafayette 99-7031, -70310, -7128, -71284, F-341;  Lietz 3054L; Lutz 102S, 252; Micronta 150; SIC 1520, 1530, 1530A.  Complete Cursor Pic RR30  $40 New
Lens, Replacement   Pic RR30L
$10 Replacement
Top Bar with Spring RR3B
$8 New
Bottom Bar, no Spring RR3B
$5 New
Cursor Screw, Chrome RR3S $3 New
1-3/4-inch (47-mm) wide duplex rules with new style cursors including, but not limited to R/R 151, 157, 158, 159; Alvin 1151, 1157; Compass 1325; Dietzgen B-1734; Jason 803; Lafayette 99-7055, -70559, -7102, F-428, F-686; Lutz 151, 151P; Micronta 157; Omega DTDS-1065;  Pickett B1; SIC 1510, 1570, 1580.  Complete Cursor Pic RR35 $40 New
Lens, used   Pic RR35L $16 New
Top Bar with Spring RR3B
$8 New
Bottom Bar, no Spring RR3B $5 New
Cursor Screw, Chrome RR3S
$3 New
Note "Used" items are excellent condition with minor signs of wear but no damage or graffiti.  "New" items are unsold distributor's stock from the 1970s.  Screws described as "Replacement" are new stainless standard hardware items similar, but not identical, to factory original.  Lenses described as "Replacement" are newly made from acrylic sheet stock; they are almost indistinguishable from original facory parts but may require slight adjustment of the screw holes.

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