Mechanical Advantage Factor

In order to complete this step you will need something of a known weight. The heavier this weight is, the more accurate the result will be. One way to construct the required weight is to use a hive telescoping cover inverted and used as a base for a hive body. Place this combination on a pair of supports that will mimic as hive stand and allow for inserting the BeeWeigh under the edge of the telescoping cover. Into the hive body place many bricks or other weights to simulate the weight of a hive. Use the fish scale to weigh all of the pieces of this mass and record the total weight. Use the BeeWeigh and make measurements as if you were weighing a hive. Convert the pounds and ounces to a fractional pound value and divide it into the weight of the mass.  You already know the tare weight of the BeeWeigh.  See calculating gross weight on how to make the computation.  Since you already know the gross weight, you can calculate the mechanical advantage factor for the device.

A 5-gallon bucket full of water would also work as a weight.

NOTE:  To add to the accuracy of the calibration, it is important to have the center of gravity of the weight remain in one position and to mimic the center of gravity of a beehive as much as possible.  The weight should not shift between measurements.  If the center of gravity is located exactly in the center of your known weight, front to back and left to right, you should obtain the same readings on either side and from the front or the back.  Of course, the bees don’t work that way.  Measurements of actual hives will vary side to side and front to back.