Instrument component list

1872 objects recovered by Waynman Dixon were:

 1. A plumb bob

2. A fragment of scale rule (now missing but recorded by Piazzi Smyth as marked in cubits)

3. A bronze or copper fork with fixing rivets attached.

 The 1993 objects discovered by Rudolph Gantenbrink in the north shaft of the Queens Chamber were:

 1. A piece of wood with holes that match the rivets on the bronze item.

2. A 2-meter plus length of wood resembling a staff with a portion missing.

3. Various pieces of unidentified material, located in two areas of the shaft.

4. A large rectangular object can be seen at the upper end of the shaft attached to the 2-meter length of wood.

 With this component list and the previous research of the cross and plumb line, it is possible to assemble the known parts in a logical format.

Assembly list

Logical assembly of the instrument from the component list.

 1. The metal fork appears to be designed to attach to one end of the long staff by a half housed joint held by the two rivets on one side of the hook.

2. The plumb line is looped over the fork, on the top of the staff, by way of a slipknot. The working end returning over the side of the fork opposite to the scale, this allows the line to cut the apex of the joint between the cross arm with considerable precision.

 3. A pouch or net is fixed to the opposite end of the plumb line, to hold the plumb bob.

 4. A cross bar is mounted on the fork, at right angles to the staff and fixed with the remaining two rivets at the front of the instrument.

(I believe that this is the purpose of the object with two corresponding holes still in the shaft)

 5. One end of a measuring rod is fixed at 45o to one arm of the cross bar.

 6. The other end of the measuring rod is fixed at 45o to the upright of the staff.

Assembled Instrument

Having completed the initial assembly and understanding the principles of the instrument earlier outlined, it can be established what components are missing to complete the proposed instrument and turn it into a working model, strengthening the hypothesis.

Squaring the Circle?

Extreme accuracy for the time of three arc minutes would be achieved by the development of an exponential scale.

This is achieved by drawing lines from the center point of a circle outward, through the rule.

This can be seen in figure 7, kindly provided by Jim Bowles, NASA retired.

Proof that the Egyptian's had sufficient knowledge of decimals and degrees to allow construction of the measuring rod, has already been proved and published by Sir William Flanders Petrie, when he surveyed the Pyramid of Khufu, where he stated that the Royal Cubit measured 523.95 millimeters or 20.6 inches.

It was established that Fourth Dynasty builders divided the cubit into decimals.

Sir William also named a unit of measurement used at Giza as a digit, which is constantly accurate to one tenth of a millimeter.

1.75752 cubits = 9180 digits = 918 millimeters = 90 centimeters approximately.

Sufficiently close enough for centimeters and millimeters to represent degrees and minutes for the purposes of this experiment.