The utility model relates to a scale for 10kV distribution transformer becomes platform and assembles marks district, low pressure cross arm by scale main part, low pressure cable hoop and marks district, ground flat steel and mark district, high -tension electricity staple bolt and mark district, high pressure and fall that district is marked to the load, the arrester is carried on a shoulder pole the spirit level and is formed, scale main part top is zero scale line, the scale main part openly mark for the high pressure falls the load that the district is marked in district, high -tension electricity staple bolt, the spirit level is carried on a shoulder pole to the arrester in proper order from supreme down, the back of scale main part from supremely down mark the district for the low pressure cross arm marks district, low pressure cable hoop in proper order, ground flat steel marks the district. The advantage is: carry lightly, convenient, the district uses in proper order according to the mark, and constructor masters application method easily. After using this scale, the distance is accurate between each position of change platform of installation, accords with to become thedistance that the platform allusion quotation established between each position and require.