A through-beam multi-digit dry meter is disclosed, wherein a lower and an upper holding plate are fastened together; two brackets are integrally connected on the lower holding plate. A 180° curved frame is between the brackets, on which is a flexible printed circuit. Engagement holes are in the brackets. A light-transmitting hollow character wheel shaft is in the engagement holes. Character wheels are on the light-transmitting hollow character wheel shaft and made of light-transmitting material. On the left and/or right side of a character wheel, short black strips are stamped. Long black strips are stamped on the character part of the character wheel head to tail, on which numbers are printed. The meter enables direct reading of three to eight character wheels to measure gas, electricity of water of large flow within the national standard limitation, which is easy to produce and assemble and saves the cost.

A through-beam multi-digit dry meter is disclosed, wherein a lower and an upper holding plate are fastened together; two brackets are integrally connected on the lower holding plate. A 180° curved frame is between the brackets, on which is a flexible printed circuit. Engagement holes are in the brackets. A light-transmitting hollow character wheel shaft is in the engagement holes. Character wheels are on the light-transmitting hollow character wheel shaft and made of light-transmitting material. On the left and/or right side of a character wheel, short black strips are stamped. Long black strips are stamped on the character part of the character wheel head to tail, on which numbers are printed. The meter enables direct reading of three to eight character wheels to measure gas, electricity of water of large flow within the national standard limitation, which is easy to produce and assemble and saves the cost.

A steel barrel rotation assembly for rotating a steel barrel for manufacturing a steelpan drum includes a base that is positionable on a horizontal support surface, a plurality of legs extending upwardly from the base and a mounting disk attached to the plurality of legs. A rotation disk is rotatably disposed on the mounting disk and a steel barrel can be positioned on the rotation disk. A drive unit is coupled to the mounting disk and the drive unit mechanically engages the rotation disk. The drive unit rotates the rotation disk when the drive unit is turned on to rotate the steel barrel. A plurality of holders is each of the holders is slidably disposed on the rotation disk. Each of the holders extends upwardly from the rotation disk to engage the steel barrel for securing the steel barrel on the rotation disk.

A steel barrel rotation assembly for rotating a steel barrel for manufacturing a steelpan drum includes a base that is positionable on a horizontal support surface, a plurality of legs extending upwardly from the base and a mounting disk attached to the plurality of legs. A rotation disk is rotatably disposed on the mounting disk and a steel barrel can be positioned on the rotation disk. A drive unit is coupled to the mounting disk and the drive unit mechanically engages the rotation disk. The drive unit rotates the rotation disk when the drive unit is turned on to rotate the steel barrel. A plurality of holders is each of the holders is slidably disposed on the rotation disk. Each of the holders extends upwardly from the rotation disk to engage the steel barrel for securing the steel barrel on the rotation disk.

A foldable idiophone musical instrument may have two frames to support accidental tone bars on the first frame and natural tone bars on the second frame. Connecting members may attach to opposite ends of the frames. The connecting members may allow the frames to rotate from 0 to 180 from a horizontal position to collapse or fold the instrument. The connecting members may have a riser portion and a stop block portion. The riser portion may elevate the accidental tone bars above the natural tone bars. The stop block portion may prevent the frames from rotating to less than 0 from the horizontal when in a performance position.

A through-beam multi-digit dry meter is disclosed, wherein a lower and an upper holding plate are fastened together; two brackets are integrally connected on the lower holding plate. A 180 curved frame is between the brackets, on which is a flexible printed circuit. Engagement holes are in the brackets. A light-transmitting hollow character wheel shaft is in the engagement holes. Character wheels are on the light-transmitting hollow character wheel shaft and made of light-transmitting material. On the left and/or right side of a character wheel, short black strips are stamped. Long black strips are stamped on the character part of the character wheel head to tail, on which numbers are printed. The meter enables direct reading of three to eight character wheels to measure gas, electricity of water of large flow within the national standard limitation, which is easy to produce and assemble and saves the cost.

A through-beam multi-digit dry meter is disclosed, wherein a lower and an upper holding plate are fastened together; two brackets are integrally connected on the lower holding plate. A 180 curved frame is between the brackets, on which is a flexible printed circuit. Engagement holes are in the brackets. A light-transmitting hollow character wheel shaft is in the engagement holes. Character wheels are on the light-transmitting hollow character wheel shaft and made of light-transmitting material. On the left and/or right side of a character wheel, short black strips are stamped. Long black strips are stamped on the character part of the character wheel head to tail, on which numbers are printed. The meter enables direct reading of three to eight character wheels to measure gas, electricity of water of large flow within the national standard limitation, which is easy to produce and assemble and saves the cost.

A steel barrel rotation assembly for rotating a steel barrel for manufacturing a steelpan drum includes a base that is positionable on a horizontal support surface, a plurality of legs extending upwardly from the base and a mounting disk attached to the plurality of legs. A rotation disk is rotatably disposed on the mounting disk and a steel barrel can be positioned on the rotation disk. A drive unit is coupled to the mounting disk and the drive unit mechanically engages the rotation disk. The drive unit rotates the rotation disk when the drive unit is turned on to rotate the steel barrel. A plurality of holders is each of the holders is slidably disposed on the rotation disk. Each of the holders extends upwardly from the rotation disk to engage the steel barrel for securing the steel barrel on the rotation disk.

A steel barrel rotation assembly for rotating a steel barrel for manufacturing a steelpan drum includes a base that is positionable on a horizontal support surface, a plurality of legs extending upwardly from the base and a mounting disk attached to the plurality of legs. A rotation disk is rotatably disposed on the mounting disk and a steel barrel can be positioned on the rotation disk. A drive unit is coupled to the mounting disk and the drive unit mechanically engages the rotation disk. The drive unit rotates the rotation disk when the drive unit is turned on to rotate the steel barrel. A plurality of holders is each of the holders is slidably disposed on the rotation disk. Each of the holders extends upwardly from the rotation disk to engage the steel barrel for securing the steel barrel on the rotation disk.

A stepper motor assembly, for use in an instrument panel in some applications, has a first rotor, a second rotor, a set of first electromagnets, and a set of second electromagnets. Each electromagnet is disposed adjacent to one of the first and second rotors and is configured to generate a magnetic field to rotate the respective rotor. The first rotor is configured to rotate a first shaft, wherein the first shaft extends from a first side of the stepper motor assembly. The second rotor is configured to rotate a second shaft, wherein the second shaft extends from a second side of the stepper motor assembly. The second side is opposite the first side. The first and second shafts are rotatable independently about a single shaft axis.