K&E "D 68 1617" (D4053-3) 10" Polyphase Mannheim 1962-1972

Special Goverment Issue of the 4053 with Decimal Trig Scales

Note: Both Trig scales are referenced to the C and D scales

These scans are from the collection of Clark McCoy

Front side

Back side of slide

Rear side

Top edge

Top edge

Left end