04 Rectangle hook tool

Photo: Rectangle hook tool

The TactiForma has one rectangle hook tool with two orthogonal rulers with a length of 10 centimetres.

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Detailed description of the rectangle hook tool

The rectangle hook tool has the shape of a capital l, where the horizontal and vertical part of the character have the same length of 10 centimetres / approx. 4 inches. The two parts enclose an angle of 90 degrees. They are equipped as a ruler with measurement indications in centimetres at the top surface and indents per half centimetre along the sides. The body of the tool is two centimetres wide. On the outer side, near to the rounded corner and to the tips you find finger fitters for easy lifting or extra grip. The corner between the sides is rounded at the outer side. At the top surface is a groove under an angle of 45 degrees for alignment. The rulers are ending with a 90 degree hook serving as a pen blocker. Pushpin markers are located near the rounded corner and near to the tips.

Rectangle hook tool manual

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Right corner

By drawing along the rulers into the enclosed corner, two lines under an angle of 90 degrees occur.

Right corner triangle

When connecting the two endings of the previously created lines you get a right corner triangle.

Diamond

• For the centre position, use a pushpin. For high precision you might want to use four additional pushpins for the corners.
• Place a first pushpin at the centre position of the diamond.
• Place the enclosed corner of the rectangle hook against the pushpin in the desired orientation.
• Most logical is to have one ruler pointing left, the other ruler downwards.
• Mark or place a pushpin at the desired horizontal ruler position for corner A.
• Mark or place the third one along the vertical ruler for the B corner.
• Now The marked positions or the three pushpins are positioned in a triangle.
• Lift the tool and rotate 90 degrees counter clockwise.
• Place the enclosed corner of the tool again against the pushpin that marks the centre position and make sure the ruler touches the B pushpin.
• Place a fourth pushpin for corner C, which is opposite A.
• Rotate again 90 degrees.
• Place a fifth pushpin for corner D in the similar ruler position as for corner B.
• Connect the four corners.

Kite

In the kite shape the distance from one pair of opposing corners to the centre position differs. In other words, one of the diagonal lines is cut in two sections with different lengths. Apart from this, the drawing instructions are similar as for the diamond.

Photo: creating the last line of the kite conform the instructions

Challenge

Fit a diamond exactly in the eight times six centimetres ellipse. The corners of the diamond are all four exactly on the ellipse outline.