Timche is the symbol of Irans`Architecture masters. It's considered as a reflection or presentation of Iranian art parade. The originality concealed in its chronic structure, refers to the tale of Iran's extensive culture. Considering the undeniable dependence of Timche on commercial situations of bazzar through the history, expecting a steady presence of Timche as a commercial building is obviously logical. Herein, travel accounts and historical documents could be a good proof of the subject. But, despite the stagnancy of the Iranian culture in Ghajarid era, in all economic, social and other aspects, and in spite of the insufficiency, existing in the reign, we can express that the architecture of Timche, as a covered place in the Iranian bazaar, built for offering more valuable stuffs, is considered as the most astonishing masterpiece of public architecture ever built in Iranian economic textures. During this period, a high variety of Timche patterns, created by Iranian architecture masters. One of the main reasons of this magnificence could be the increase in the importation of foreign goods during the first half of Ghajarid era. This could make the Iranian Timche as a field of competition between different foreigner merchants, which could as well influence the prosperity of Timche, especially in the first half of Ghajarid era. Considering the lack of researches on this subject, this paper tries to peruse the change in proportional and numeral systems of Iranian Timche, based on time and climate variables. In the first place, the samples' numeral traits as: Coincidence of symmetry axes in Timche and Sara, Parallel symmetry axes in Timche and its chambers and the connection of Timche with Sara and Bazaar are studied. Besides, dimensions and the proportion of 12 Timche samples, picked from 6 Iranian cities, (Ghazvin, Arak, Tabriz, Kashan, Esfehan and Yazd) are analyzed. The samples are equally chosen from two different climatic regions (Hot and dry, Cold and dry) and two half of Ghajarid era. (1815-1892) and (1892-1969). In fact, the fluency and unique process of Iran`s art and architecture disrupted in the period after Mohammad shah, due to blindly imitation of the western culture. The situation aggravated at the time of Naser-E-Din shah. Concerning the mentioned events, the authors of this article considered the halves of Ghajarid era as a momentous factor influencing the architecture of Timche as well. Statistical analyses considering (Pvalue<0.05), shows a meaningful difference in reduction of the dimensions in the second half of Ghajarid era. Considering that the 6 samples chosen from the first half of Ghajarid reign are of the cold and dry climate, we expected the dimensions of this period to be less than the second half chosen-samples of hot and dry regions. This opposition shows the weak relative status of climate and Numeral factors in design of the Iranian timche in ghajarid era. Proofing that the reduction is not directly related to the climatic changes, we can concern the bad economic and social status in the second half of Ghajarid era as resulted in diminution of the dimensions as well.