Marjon Tas The TactiForma set contains regular polygon tools with five, six, seven, eight or nine corners referred to as pentagon, hexagon, heptagon, octagon and nonagon respectively. The radius of the polygons range from three to eight centimetres. The magnetic foot is an essential part of the regular polygon tool, to hold the tool in place. To description sectionTo manual section Global description Imagine a line drawing of an isosceles triangle pointing upwards. The top is cut …
Detailed description of the ellipse tool The body of the tool is symmetrical. It can be seen as a circle, equally stretched in 2 opposite directions. The frame of the tool is one centimetre wide. At the outer side the frame has 2 finger fitters for easy grip. Pushpin markers are located at 0, 90, 180 and 270 degree angles relative to the centre position. So the markers indicate the longest and shortest diagonal of …
Detailed description of the spur wheel tool The wheels in the set have 12 and 20 teeth respectively. The body of the spur wheel is a circle with eight finger fitters around the outside. The body width is about six millimetres. From this inside circle the ‘negative’ teeth are pointing towards the centre. After tracing the inner contour, the spaces between the teeth are in fact the positive teeth around the outside of the spur …
Detailed description of the polygon tool The TactiForma set contains tools to create regular polygon shapes with five, six, seven, eight or nine corners referred to as pentagon, hexagon, heptagon, octagon and nonagon respectively. The radius of the polygons range from three to eight centimetres. The magnetic foot is an essential part of the regular polygon tool, to hold the tool in place. Foreword The regular polygon shape and the regular polygon tool itself need …
Detailed description of the rectangular hook tool The rectangular 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 …
Detailed description of the triangle tool The length of the sides range from three to nine centimetres. The body of the triangle is about 12 millimetres wide. On all three of the outer sides a finger fitter is provided for easy lifting or extra grip. One outer corner is rounded, the other two are sharp. All three corners have a pushpin marker at the top surface. Along the outside and inside are indents located at …
Detailed description of the square tool The sizes of the squares ranges from two to eight centimetres. The frame that forms the square is one centimetre wide. Two finger fitters are provided in opposing sides. Two opposite diagonal corners are rounded. The others are sharp. At each corner a pushpin marker is located. Along the outside and inside a small indent is provided at every centimetre. In case the length of the side is odd …
A math teacher came to us with the question: ‘Can you create a 30/60/90 degree version of a triangle tool for the TactiPad’? He wants his students to draw 3D shapes such as cubes, prisms and pyramids. Being interested to improve/extend the Thinkable products we have taken up this challenge. After describing the details of the tool, we present some of the decisions we made during the design process. You will also find information on …
In late summer 2021, Thinkable CEO Jaap Breider was visited by journalist Eskandar Abadi and film maker Shahab Kermani. They produced a video for Deutsche Welle TV (Persian department). Jaap was accompanied and interviewed during one day in his house and company headquarters in Huissen (NL). Besides receiving his guest, talking about himself and Thinkable, Jaap explains the basics of tactile graphics to the interviewer. Being a blind man himself, he is obviously experiencing something …
The Spur Wheel Template Detailed description of the spur wheel template There are different types of spur wheels. This shape represents the mechanical properties with which the force can be maximised. When you interlink two wheels of this type, their teeth always have a point of contact under an angle of 90 degrees when rotating. Although it looks like an arbitrary number of teeth can be placed in a circle, this is not the case. …