The utility model discloses a survey device of buret post belongs to the measuring tool technology field, including adjustment ring, a plurality of displacement sensor, support and guiding mechanism, the adjustment ring is suitable for the cover outside the tubular column that awaits measuring, a plurality of displacement sensor fix the adjustment is on the ring, each displacement sensor with the distance in the centre of a circle of adjustment ring is the same, the adjustment ring with but support relative movement ground is connected, guiding mechanism with the adjustment ring is connected, guiding mechanism is suitable for the drive adjustment ring up -and -down motion is suitable for the messenger the adjustment ring is in it is static on the support. The utility model provides a survey device of buret post, the data of measuring girth that being used for of obtaining calculated the tubular column that awaits measuring and out -of -roundness are more accurate reliably.