SME 3012 AB tonearm 12" long.

arm SME 3012 AB length 12" for ALL TYPES OF CELLS. Adaptable cartridge holders: ORTON SPU, EMT, SME for cartridge DENON, SHURE, etc....ATTENTION: The ORTOFON cartridge holder in the photos is not supplied with the armIt comes with 2 counterweights: - 1 heavy for cartridge and headshell > 35 grams, ORTOFON SPU type - 1 light for cartridge and headshell < 35 grams, SME headshell + DENON, SHURE, AUDIOTECHNICA cartridge etc... It is optimized to reduce playback distortion3 characteristics are essential for the playback quality of an arm:- the effective length- the height above the record- the angle of reading errorSME 3012 AB 12" long VS SME 3012309 mm mounting distance 29 4 mm322 mm Effective length 305 mm13 mm Height exceeding pitch 11 mm16.9 º Pickup angle in° 16.5 º 1.4 º Maximum error in º 1.76 º 0.289 % average distortion 0.445 % 0.442 % maximum distortion 0.681 % ATTENTION : This arm is equipped with a specific attachment to adjust the different existing cell heads that rotates 45° with respect to the arm.1 -For connection with ORTOFON SPU and EMT cells, the arm cell connection support must be oriented with the cross pins (1 in top and 1 below, the other 2 with 1 on the left and 1 on the right - see photo 2)2 - To connect SME or equivalent heads, the arm attachment support must be rotated by 45° to have the pins squared (2 horizontal sides and the other 2 vertical ux - see image 3)