VINTAGE Sound System Calculators, Slide rules, Lattitude/Longitude Measure Stick

Description

For sale is a collection of Vintage Sound System Calculators, Slide rules, Lattitude/Longitude Measure Sticks. Included are the following items:
1. 1- Allied Radio R-F Resonance & Coil Winding Caculator with good cover
2. 2- Shure Reactance Slide Rules (1 without cover & 1 with poor paper cover)
3. 2- db Products Lattitude & Longitude Measuring Sticks with good covers
4. 1 AS Radio Range Calculator
5. 1- "SYN-AUD-CON" Sound System Calculator
6. 1- The American Radio Relay League L/C/F Calculator (Rough shape but works)
7. 1- The Ballantine Rule VOLTS-DB Power Level
8. 1- "SYN-AUD-CON" Reverberation Time Calculator
9. 1- K&E Log Duplex Decitrig Slide Rule Manual (No. N4081) (Copyright 1943, 1945, 1947)
10. 2- Copies of Tech Topics (1- Volume 2, # 2 Sept. 15, 1974) (1- Volume 1, #3 Feb. 1977)
11. 1- Metric Master Calculator given away by Kemper Insurance
You get all these for one price.
I will combine with other items bought around the same time and on the same invoice to save on shipping costs. Look the pictures over and ask questions if you like. I will be listing other related items so keep a eye out for them.