Measurements of cosmogenic particles at various locations and altitudes arebecoming increasingly important in view of worldwide interests in rare signals for search of newphysics.In this work, we report measurement of muon zenith angle distributions andverticalflux using a portable setup of four one-meter long liquid scintillator bars.Each scintillator bar is read out from both sides via photomultiplier tubes followedby an 8-channel Digitizer. We exploit energy deposition and excellent timing of scintillators to construct twodimensional tracks and hence angles of charged particles. We use liquid scintillators since theyhave an added advantage of pulse shape discrimination (PSD) which can be used for detectingmuon induced particles. The energy deposition, time window of event and PSD cuts are used to reduce the random as well ascorrelated backgrounds. In addition, we propose three track quality parameters which are appliedto obtain a clean muon spectrum.The zenith angle measurement is performed upto 60°. With our improved analysis, we demonstrate that a setup of 3 bars can also beused for quicker and precise measurements. The vertical muon flux measured is 66.70 ± 0.36 ± 1.50 /m2/sr/s with n = 2.10 ± 0.05 ± 0.25in cos n θ at the location of Mumbai, India (19°N, 72.9°E) at Sealevel with a muon momentum above 255 MeV/c.The muon flux has dependence on various factors, the most prominents are latitudes, altitudesand momentum cut of muon so that portable setup like this can be a boon for suchmeasurements at various locations.