Manufacturer: Karnish Instruments, Inc. — Lock Haven, Pennsylvania

MFR Part Number: AC-135-B

Serial No: 8899

Range: 2,000 F.P.M.

TSO: C8b

Type: II

Weight: 1.0 lb

Manufacture Date: February 9, 1968

Classic vertical speed indicator from Karnish Instruments, based in Lock Haven, PA — the same town as Piper Aircraft. Commonly found in Piper singles of the era: Cub, PA-22 Tri-Pacer, PA-24 Comanche, PA-18 Super Cub, and other general aviation aircraft of the 1960s-1970s.

[SELLER TO CONFIRM before publishing: test status, glass condition, needle freedom.]

Cosmetic wear consistent with age. Sold as-is — buyer assumes responsibility for testing, IA/A&P inspection, and any overhaul before airworthy use.