referring firstly to fig1 through 5 , illustrated therein is a penis erection testing and measuring device comprising a strip or band 1 which is about 20 cm in length and about 2 cm in width . the band 1 comprises a suitable material , such as a textile material , as indicated , having a fleece or tufted layer on one surface of the band , as indicated at 2 . the threads or yarns of the layer 2 form closed loops , such tufted textile configurations being known . provided on or at least substantially adjacent to one end of the band 1 , on the surface thereof remote from the surface carrying the layer 2 , is a slider member 3 illustrated in the form of a loop - like member , which is shown in front view in fig5 to which reference will shortly be made . the slider member 3 is fixed to the band 1 by any suitable means , as by adhesive , or may be formed in one piece therewith . referring now therefore to fig5 the slider member 3 has an opening in the form of a slot 4 which substantially corresponds to the width of the band 1 which , in use of the device , passes through the slider member 3 . the other end of the band 1 , namely the end remote from the end bearing the slider member 3 , is inclined as indicated at 5 to facilitate passing the band 1 through the slot 4 , so that the device then forms a loop configuration as indicated at 6 in fig3 and 4 . the device will thus be in that form , when it is fitted to a penis in an encircling relationship . the tufted layer 2 on the band 1 ensures that the braking or retardation force which occurs when the band 1 is drawn through the slot 4 has and maintains a given value . that force may be easily determined , by virtue of the width of the slot 4 . in order to carry out an erection testing or measuring operation , the device is put into the loop form indicated at 6 in fig3 and 4 , around the penis when in a non - erect condition , and then pulled tight until the band bears lightly against the penis . the position of the slider member relative to the band 1 is then read off on a scale 7 on the band 1 , or marked by means of a marking put on the band 1 adjacent the slider member 3 . when an erection occurs , the band 1 is then drawn through the slot 4 , as the length of the loop encircling the penis increases as a result of the expansion due to the erection . in order for the band 1 to be drawn through the slot 4 in the slider member , the braking or retardation force applied to the band 1 must be overcome , thereby also giving information as to the force which has at least occurred , due to the penis going into an erect condition . two forms of the device , which may desirably be distinguished by virtue of being of different colours , may have for example retardation or extension forces of 250 g and 450 g respectively . if appropriate , the retardation force of any given device may be subsequently increased , in accordance with the illustration shown in fig4 by fitting a further slider member 3a on to the free end of the band 1 , the further slider member 3a not being secured to any part of the band , unlike the slider member 3 which is secured to the first end of the band . the increased retardation force occurs immediately if the further slider member 3a is pushed on to the band in such a position as to bear against the first slider member 3 . however , as illustrated in fig4 the slider member 3a may also be arranged at a certain spacing from the slider member 3 . in that case , the increased retardation force will occur only after a certain degree of erection , sufficient to cause initial expansion of the loop 6 and thus movement of the slider member 3 along the band towards the slider member 3a , thereby providing information about the force occurring , from that point onward . if desired , it would also be possible to fit a plurality of additional slider members 3 a on the band 1 . reference will now be made to fig6 showing a modified form of the slider member 3 in which the slot therein is lined with a tufted or bunch - bearing material 8 , for example similar to the material forming the layer 2 on the band 1 shown in fig1 . in this case , in order to produce a properly defined retardation force , it is also possible to use a comparatively smooth band of plastic or textile material , or metal . fig7 shows another modified form of the slider member 3 . disposed in the slot 4 defined by the loop - like configuration of the slider member 3 is a pressure plate which can be varied in its position in the slot 4 by means of an adjusting screw 10 which is screw - threaded in one of the side limb portions of the loop member 3 , thereby permitting the pressure applied to the band 1 by the pressure plate 9 , and therefore also the retardation force , to be suitably adjusted in that manner . the adjusting screw may also be so arranged as to press the side limb portions of the loop slider member 3 together in order to adjustably grip the band in the slot . reference will now be made to fig8 and 9 showing another embodiment of the device which also comprises a band 1 which is formed into a loop , in a similar manner to the loop configuration shown in fig3 and 4 . accordingly , the dash - dotted vertical lines in fig8 and 9 , on respective sides thereof , indicate that the band 1 is carried round to join to itself , to constitute a single band . disposed on the two ends of the band 1 are respective blocks 11 of elastomeric plastic material , being secured thereon for example by adhesive . each of the blocks 11 has three bores 12 extending therethrough in the longitudinal direction of the band 1 , while wires or threads or like elongate extension portions 13 are passed through respective ones of the bores 12 in the blocks 11 . the portions 13 are secured by knots 14 at their right - hand ends , so that they cannot be pulled through the block 11 on the right - hand side in fig8 and 9 . the elongate portions 13 comprise for example monofilaments of plastic material . the dimensions of the bores 12 and the portions 13 are such that a predetermined braking or retardation force occurs when the ends of the band 1 and thus the blocks 11 are pulled apart . the braking resistances exerted by the three threads 13 may be different from one thread to another , to permit gradation in the resistance applied to movement of the band . the band 1 may again be a textile band , but it may also be a band of plastic material which is produced in one piece with the blocks 11 , as by an injection moulding process . the portions 13 do not necessarily have to be of circular cross - section , and similarly in regard to the bores 12 . thus , it is possible to use other cross - sectional configurations , as well as modified strip - like configurations . referring now to fig1 through 12 , illustrated therein is a device comprising a band 1 which has a plurality of recesses on one surface thereof , being defined in the illustrated construction by teeth 15 extending substantially transversely with respect to the longitudinal direction of the band 1 . the band 1 is again passed through the slot 4 defined by a loop - like slider member 3 . disposed within the slot 4 is a resilient projection 16 in the form of a rib or limb portion , which co - operates with the teeth 15 in a ratchet - like manner . when therefore the band 1 is drawn through the gap 4 , the projection 16 produces a brief detent action after each tooth 15 . a given pulling force which defines the retardation effect is then necessary in order to pull the band 1 further on to the next tooth 15 . the slider member 3 with the projection 16 , which may be of a different configuration from that illustrated , are desirably made from a resilient plastic material of high resiliency , for example a polyacetal resin , known under the trade mark delrin . however , it is also possible to use a metal slider member with a steel spring member fitted therein . it will be seen therefore that the testing and measuring device as described above is simple , inexpensive and easy to manufacture , and can be re - used as often as desired , although , because of the low cost of production , it is readily possible for each patient to have a fresh testing device for his use . the edges of the slot in the slider member may be rounded ( fig1 ), to enhance the reliability of measurement of the device , by permitting the band to move smoothly through the slider , while the inside surfaces of the slot may be roughened or of a non - smooth nature , in order to apply resistance to movement of the band through the slider . in addition , the thickness of the band may increase over its length , as for example in fig1 , to progressively increase the resistance to movement of the band through the slider , with suitable calibration of the scale 7 on the band . various modifications and alterations may be made in the above - described embodiments without thereby departing from the spirit and scope of the present invention .
an erection testing and measuring device comprises a band having a slider secured to one end , with an aperture for receiving the other end of the band . the device is fitted around a penis to be tested and measured , in an unerected condition , expansion of the penis upon an erection occurring causing the band to be pulled through the slider member against a retarding force produced thereby .