AW Sperry Phase Sequence indicator for knife

[DaveReb]

I have a lightly used AW Sperry Phase Sequence indicator model number :
PSI-8031 in lighty used condition. http://www.awsperry.com/sperry/catalog?item=psi-8031. No box or paperwork. Comes with carry pouch
I'd like to trade for a knife or knives of equal value. I'm interested in PE folders with blade lengths no longer than 3.25"
Primarily:
Spyderco lava
Spyderco Etched Spin
Spyderco Etched Dragonfly
Spyderco Navigator 2
Spyderco UKPK
Spyderco "S"
Kershaw Mini Mojo
Kershaw Mini Cyclone TiZDP
Kershaw Mini Cyclone
Boker Trance
Boker Wharcom
Open to other offers

Fixed Blades:
BRKT Lil Tusk
BRKT Little Creek

Thanks
Davereb