Table 2: Standard time for each element of assembly task in standard minutes (SM) Element Element of Task Time in No. standard minutes (SM] Press operations Assemble poke subassembly (LH poke, RH poke, poke 0.12 bush) 2 Fit poke subassembly to frog (poke S/A, poke pin, frog) 0.10 3 Rivet adjusting lever to frog (adjusting lever, rivet, frog) 0.15 4 Press adjusting nut screw to frog (frog, adjusting nut 0.08 screw) Total Time 0.45 Bench operations 5 Fit adjusting nut to frog 0.15 6 Fit frog screw to frog 0.05 7 Fit knob to base 0.15 8 Fit handle (Tole) to base 0.17 Fit frog subassembly to base 0.15 10 Assemble blade subassembly 0.08 11 Assemble blade subassembly, clamp and label to base 0.20 and adjust 12 Make up box and wrap plane, pack and stock Total Time 7 There are 12 elements in the process and standard times for each element of assembly task in standard minutes (SM). However, element 12 is in the process of time and motion study where the results are on Table 3, where the operations analyst rated worker at 85% where worker performed 85% of the normal time and the firm uses allowance factor is 15%. (Used this formula for Standard Time= Normal Time/ (1-Allowance Factor) Table 3: Time and Motion Study of Element 12 Observations 2 3 4 5 Total Time (Minutes) |0.18 0.22 0.17 0.23 20