Manufacturer: Jason
Country of Manufacture: Japan
Type: 803
Date of Manufacture: 1950+
Scales: (Front) LL00, L, K, A [B, S, ST, T, C] D, DI, P, LL0
Scales: (Back) LL01, LL02, LL03, DF [ CF, CIF, CI, C] D, LL3, LL2, LL1
Number of Scales: 25
Gauge Points: π, C, R, p', p'', re, e
Slide Rule made from: Bamboo and Plastic with Metal End Pieces
Cursor made from: Plastic
Cursor Lines: 1 front, 1 back
Overall Length of Rule: 35 cm
Length of Scales: 25 cm + 3.0 cm extension
Width: 4.7 cm
Depth: 0.7 cm
Weight: 132 gms
Acquired from: Peggy and Ralph Paasch
Date: May 2001
Condition: Good
 Brown Leather Case.  Good condition
 Essentially the same as the SIC 151, 
 Alvin Elite Multilog and Sans Streiffe 312,
 Lafayette 99-7055 (but with extra gauge points).