Spare pen tip, packaged in plastic casing, for Chessell type 320 6-channel chart recorder, serial no.1979-5284, each channel fitted with function generator and high and low level alarms, made 1979. Pen tip for Chessell type 320 6-channel chart recorder, 1979 1979
Spare pen tip, packaged in plastic casing, for Chessell type 320 6-channel chart recorder, serial no.1979-5284, each channel fitted with function generator and high and low level alarms, made 1979. Pen tip for Chessell type 320 6-channel chart recorder, 1979 1979
Spare pen tip, packaged in plastic casing, for Chessell type 320 6-channel chart recorder, serial no.1979-5284, each channel fitted with function generator and high and low level alarms, made 1979. Pen tip for Chessell type 320 6-channel chart recorder, 1979 1979
Spare pen tip, packaged in plastic casing, for Chessell type 320 6-channel chart recorder, serial no.1979-5284, each channel fitted with function generator and high and low level alarms, made 1979. Pen tip for Chessell type 320 6-channel chart recorder, 1979 1979
Spare pen tip, packaged in plastic casing, for Chessell type 320 6-channel chart recorder, serial no.1979-5284, each channel fitted with function generator and high and low level alarms, made 1979. Pen tip for Chessell type 320 6-channel chart recorder, 1979 1979
Spare pen tip, packaged in plastic casing, for Chessell type 320 6-channel chart recorder, serial no.1979-5284, each channel fitted with function generator and high and low level alarms, made 1979. Pen tip for Chessell type 320 6-channel chart recorder, 1979 1979