Hungarian Military Pilot's Flight Rule

Country of manufacture: Hungary?,            Date of manufacture: ____
Overall length: 32.4 cm,          Width: 4.5 cm,           Weight: 111.1 gms
Materials: Duplex design, plastic stators and slide, metal adjustable end braces
Cursor: 3.8 X 5.5 X 1.0 cms; metal runners, plastic lens; lines = two lines on front, one on back
Scales: 16, specialized
Front:
Back:
Condition: C5 (Normal Signs of Use; noticeable staining)
Came with: Nothing