supply of digital concrete test hammer with microprocessor.standards: en 12504:part 2 | astm c805 | bs 1881:202 | nf p18-417 | din 1048 | uni 9189.(technical specifications:- impact energy: 2.207 joule /nm, measuring range: 10 - 120 n/mm%b2, interface: usb, power source: 6 rechargeable batteries aa nimh 2400ma/hour, battery life: 60 hours with automatic shut down, operating temperature: -10%b0c +60%b0c, supplied complete with data transfer software, data transfer usbcable, battery charger, abrasive stone, carrying case. dimensions with case: 330x180x120 mm weight: 3 kg). (main features:-possibility to store, display on graphic lcd 128x64 and download data to pc over 15000 tests automatic statistical processing and readings automatic conversion of rebound index to equivalent compression strength in psi, n/mm%b2, kg/cm%b2 high accuracy and resolution).(during test performing:- shows index value- shows average index value- allows to select measuring system in mpa or psi- shows numbers of performed rebounds- shows date and time- identifies tested element- identifies automatically and shows rebound angle- shows battery life)