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![]() Click REFRESH on your browser if pages seem unchanged ![]() ![]() ![]() | Sphere Research Corporation 3394 Sunnyside Rd. West Kelowna, BC, Canada V1Z 2V4 Phone: +1 (250) 769-1834 FAX:+1 (250) 769-4106 A great source for test equipment, repairs, calibrations, useful metrology information, and of course, SLIDE RULES! ![]() ![]() TO SEE EVERYTHING ! |
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![]() Blundell-Harling Ltd. B.R.L BLUNDELL RULES LIMITED ![]() ![]() ![]() ![]() ![]() ![]() ![]() Later rules are marked BLUNDELL. ![]() Want to visit Blundell-Harling today? Just click on the link below: ![]() Click to visit Blundell Harling Today The ARCHIVE will appear below shortly! |
Rulers and Scales |
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Rulers and Scales |
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Rulers and Scales |
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Slide Rules |
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Slide Rules and Charts |
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Blundell Rules Ltd. Radiac No. 1 6665-110060 6665-110117 ![]() |
Radiation Effects Rule Radiac No. 1
The set includes the rule with changeable disks, and the carry pouch, both are new, perfect condition. Full instructions are on the rule reverse side. Interestingly, while it allows you to elegantly compute your radiatioon dosage, it does not say how much is fatal. An unfortunate oversight, if you should happen to really need this rule. | ![]() CLICK for bigger PIC! ![]() CLICK for bigger PIC! |
Blundell-Harling Model Number | Slide Rule Type | Size, Core Material | Scales Features | IMAGE LINKS (Browser Back to Return) |
800![]() | Basic | 10"
White Plastic, yellow highlights | A, [ B, C, ] D
-BLANK-
Simple Simplex indicator 2-Part Blue Plastic Case | ![]() |
803![]() | Rietz | 10"
White Plastic, yellow highlights | L, K, A, [ B, CI, C, ] D, S, T, ST
-BLANK-
3-Line Simplex indicator 2-Part Blue Plastic Case | ![]() |
804![]() | Darmstadt | 10"
White Plastic, yellow highlights | L, K, A, [ B, CI, C, ] D, P, S, T
[ LL1, LL2, LL3 ]
4-Line Simplex indicator, 2 stationary rear cursor lines. 2-Part Blue Plastic Case | ![]() ![]() |
808![]() | Accounting | 10"
White Plastic, yellow highlights | S, LL1, DF, [ CF, Uplift/Discount%, C, ] D, LL3, LL2
Month, [ Day, Week ]
Simple Simplex indicator. 2-Part Blue Plastic Case | ![]() ![]() |
813![]() | Rietz Classmate |
10"
White Plastic | S, T, A, [ B, CI, C, ] D, K, L
3-Line Simplex indicator. 2-Part Blue Plastic Case | ![]() |
904![]() | Academy Duplex | 10"
White Plastic | ST, A, [ B, CI, C, ] D, S, T
K, L, DF, [ CF, CIF, C, ] D, LL2, L3
1/3-Line Duplex indicator. Vinyl Slip Case | ![]() ![]() |
905![]() | Academy Duplex | 10"
White Plastic | LL01, LL02, Ll03, A, [ B, L, CI, C, ] D, LL3, LL2, LL1
K, P, ST, DF, [ CF, CIF, CI, C, ] D, T, S
1/3-Line Duplex indicator. 2-Part Blue Plastic Case | ![]() ![]() |
Pilot Balloon Rule ![]() | Mark 5 | 24"
White Plastic | Log, Cosine, Sine, Azimuth, [ Graticule (2) ] Elevation-Secant, Tangent
-Blank-
4 Simplex indicators Finished wooden hinged 2-part case | ![]() ![]() |
S143-10![]() | S143-10 | 10"
White Plastic | K, A, [ B, CI, C, ] D, L
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3-Line Simplex indicator Vinyl bag + short form instructions | ![]() |
S150-10![]() | S150-10 | 10"
White Plastic | S, T, A, [ B, CI, C, ] D, K, L
-Blank-
3-Line Simplex indicator Vinyl bag + short form instructions | ![]() |
S150-20![]() | S150-20 | 5"
White Plastic | S, T, A, [ B, CI, C, ] D, K, L
-Blank-
3-Line Simplex indicator Vinyl bag + short form instructions | ![]() |
Later 0400 Catalog Numbers CLICK IMAGE to enlarge | |
Rulers and Slide Rules |
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Missing Images Do you have one of the rules we have no data or pictures for? Please EMAIL it to us so we can include it.
Many thanks, Walter Shawlee 2.