All original WW1 infantry P21 Watkin mekometer (range-finder) signed T. Cooke & Sons, London & York. Museum quality piece, complete, excellent condition, no broken parts. Removable brass and wood lens and handle, brass adjustment knob and screws, thick metal casing. Clean and functional lens. Parts all match and are marked P21. Inside mechanism is intact and untouched, both glasses are present (no chips). Instrument is functional but will require servicing to be precise. From the estate of a private collector in Montreal (Quebec, Canada). Measures 6 X 5 3/4 X 3 1/8 inches and weighs 630 grams.