supply of battery operated portable handheldbattery operated portable handheld,battery operated portable handheld marking machine, specification and accessories (1) mac hine should be of portable/handheld type and suitable for marking on railway axle face and hub of wheel di sc. (2) marking window: 60x25 mm (minimum) (3) weight: not more than 3.5 kg (4) marking type: alphanu meric, variable (serial or text) data matrix code and logo. (5) dimension: 288 x 271 x 135 mm (6) display: led/lcd color screen 320 x 240 pixel with integrated keyboard. (7) file editing and creation: complete set up of all parameters. (8) impact force: 1 to 9 (9) power supply: 100 watts (10) battery: 18 v li-ion recharge able battery with charger 4 hours marking autonomy (normal use) (total 02 battery required with the mach ine) (11) marking depth: 300 microns minimum (12) resolution between two dots: 0.05 mm maximum (13) data transfer capabilities: via pen drive / via usb key. (14) stylus with spring: made from carbide. (15) prot ective and handling case required for machine. (16) operation and maintenance manual should be provide d with the machine. (17) supplier should impart training for operation of machine. (18) memory: 100 mb (1 9) make: sic marking, flymaker, telesis, gravotech. warranty period: upto 18 months from the date of commissioning [ warranty period: 18 months after the date of delivery ] ]