F.337 Data Sheet MJS-p-0165
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Relay-Ricoh, F-686, 1961
Serial Number or Date Stamp: J.S-3
Country: JPN | Primary construction material: bb | Case included?: yes |
General Description: Advanced linear log-log trig/decitrig vector/hyperbolic duplex slide rule
Length of 1 decade = 10 in, and overall scale length = 10 in. The largest physical dimension is 10 in.
Front Scales: Tr1 Tr2 P’ P [ Q ST Sr Stheta C ] D LL01 LL02 LL03
Back Scales: Sh1 Sh2 DF A [ B CF Th CI C _ LL1’ ] D LL3 LL2 db
Notes: Lafayette F-686, Vector Log rule; nice condition
References: https://www.sliderulemuseum.com/Ricoh.htm, https://sliderulemuseum.com/SR_Dates.htm#Relay
Date Acquired: 12/17/2020