India ranks second in fruits production. Ber fruit is grown in thorny tree which is very difficult to harvest and also consume much labour and time and thus harvesting becomes costly. Therefore, this study was taken to solve the harvesting problem of this fruit. Engineering properties of ber fruit namely length, width, thickness, equivalent diameter, sphericity, weight, firmness, volume and density were observed/determined and considering these properties a device was developed for ber harvesting and its performance evaluated in terms of harvesting capacity, losses, cost and efficiency. Harvesting capacity, losses, efficiency and cost of the developed device were found 10.35 kg/h, 4.78 %, 95.22 % and ` 5.01 per kg respectively. Thus the developed device was found 11.05 % more in capacity, 3.5 % less in losses, 3.5 % more efficiency and 8.58 5 low in cost.