Definition Of Terms:

Effective length is the distance from the tonearm's pivot point to the stylus point. It is measured only on the horizontal plane; do not measure diagonally. To measure the spindle-to-pivot distance accurately, go to an office supply or art supply store and look for a radial compass. This is a plastic rod with mounts for a pin and a pencil that come off at 90 degree angles.

Overhang Length is the shortest possible distance between the stylus point and the platter's spindle center.

Headshell Offset Angle is the angle between two lines: the first is defined by the tonearm shaft and passes through the tonearm pivot point; the second line is defined by the cartridge's cantilever and the center-line of the headshell. The offset angle is permanently built into the tonearm's design; it is not adjustable.

Spindle-to-Pivot distance is the distance from the center of the platter spindle to the vertical axis point of the tonearm. The vertical axis is the point around which the tonearm shaft and counterweight revolve as the needle moves along the playing band of the record.

Note: these data are optimized for 16 inch records.

If you have a dedicated player for 7 Inch singles, 10 Inch 78 RPM records and EPs, or 12 Inch LP Records, we also have mounting data for these applications. Custom Alignment Tools for 7 inch singles and 12 inch LPs are available now. Alignment tools for 10 and 16 inch records are also in development and will be available very, very soon.

effective length	overhang length	offset angle	spindle to pivot distance	maximum angular error between null points
200.0 mm 7.8740 in	26.5850 mm 1.0467 in	32.5124 deg	173.4150 mm 6.8274 in	2.6329 deg
201.0 mm 7.9134 in	26.4326 mm 1.0407 in	32.3309 deg	174.5674 mm 6.8727 in	2.6151 deg
202.0 mm 7.9528 in	26.2822 mm 1.0347 in	32.1516 deg	175.7178 mm 6.9180 in	2.5975 deg
203.0 mm 7.9921 in	26.1335 mm 1.0289 in	31.9744 deg	176.8665 mm 6.9632 in	2.5802 deg
204.0 mm 8.0315 in	25.9866 mm 1.0231 in	31.7992 deg	178.0134 mm 7.0084 in	2.5631 deg
205.0 mm 8.0709 in	25.8415 mm 1.0174 in	31.6261 deg	179.1585 mm 7.0535 in	2.5463 deg
206.0 mm 8.1102 in	25.6981 mm 1.0117 in	31.4549 deg	180.3019 mm 7.0985 in	2.5297 deg
207.0 mm 8.1496 in	25.5565 mm 1.0062 in	31.2858 deg	181.4435 mm 7.1434 in	2.5134 deg
208.0 mm 8.1890 in	25.4164 mm 1.0006 in	31.1185 deg	182.5836 mm 7.1883 in	2.4973 deg
209.0 mm 8.2283 in	25.2780 mm 0.9952 in	30.9532 deg	183.7220 mm 7.2331 in	2.4815 deg
210.0 mm 8.2677 in	25.1412 mm 0.9898 in	30.7897 deg	184.8588 mm 7.2779 in	2.4658 deg
211.0 mm 8.3071 in	25.0060 mm 0.9845 in	30.6280 deg	185.9940 mm 7.3226 in	2.4504 deg
212.0 mm 8.3465 in	24.8723 mm 0.9792 in	30.4681 deg	187.1277 mm 7.3672 in	2.4352 deg
213.0 mm 8.3858 in	24.7402 mm 0.9740 in	30.3100 deg	188.2598 mm 7.4118 in	2.4202 deg
214.0 mm 8.4252 in	24.6095 mm 0.9689 in	30.1536 deg	189.3905 mm 7.4563 in	2.4054 deg
215.0 mm 8.4646 in	24.4803 mm 0.9638 in	29.9989 deg	190.5197 mm 7.5008 in	2.3909 deg
216.0 mm 8.5039 in	24.3525 mm 0.9588 in	29.8459 deg	191.6475 mm 7.5452 in	2.3765 deg
217.0 mm 8.5433 in	24.2261 mm 0.9538 in	29.6945 deg	192.7739 mm 7.5895 in	2.3623 deg
217.5 mm 8.5630 in	24.1635 mm 0.9513 in	29.6195 deg	193.3365 mm 7.6117 in	2.3552 deg
218.0 mm 8.5827 in	24.1012 mm 0.9489 in	29.5448 deg	193.8988 mm 7.6338 in	2.3483 deg
219.0 mm 8.6220 in	23.9775 mm 0.9440 in	29.3966 deg	195.0225 mm 7.6780 in	2.3344 deg
220.0 mm 8.6614 in	23.8553 mm 0.9392 in	29.2500 deg	196.1447 mm 7.7222 in	2.3208 deg
221.0 mm 8.7008 in	23.7343 mm 0.9344 in	29.1049 deg	197.2657 mm 7.7664 in	2.3073 deg
221.4 mm 8.7150 in	23.6911 mm 0.9327 in	29.0530 deg	197.6689 mm 7.7822 in	2.3025 deg
222.0 mm 8.7402 in	23.6146 mm 0.9297 in	28.9613 deg	198.3854 mm 7.8104 in	2.2940 deg
223.0 mm 8.7795 in	23.4962 mm 0.9250 in	28.8192 deg	199.5038 mm 7.8545 in	2.2809 deg
224.0 mm 8.8189 in	23.3791 mm 0.9204 in	28.6786 deg	200.6209 mm 7.8985 in	2.2679 deg
225.0 mm 8.8583 in	23.2631 mm 0.9159 in	28.5394 deg	201.7369 mm 7.9424 in	2.2551 deg
226.0 mm 8.8976 in	23.1484 mm 0.9114 in	28.4016 deg	202.8516 mm 7.9863 in	2.2425 deg
227.0 mm 8.9370 in	23.0349 mm 0.9069 in	28.2652 deg	203.9651 mm 8.0301 in	2.2300 deg
228.0 mm 8.9764 in	22.9226 mm 0.9025 in	28.1302 deg	205.0774 mm 8.0739 in	2.2177 deg
228.6 mm 9.0000 in	22.8557 mm 0.8998 in	28.0498 deg	205.7443 mm 8.1002 in	2.2103 deg
229.0 mm 9.0157 in	22.8113 mm 0.8981 in	27.9965 deg	206.1887 mm 8.1177 in	2.2055 deg
230.0 mm 9.0551 in	22.7013 mm 0.8938 in	27.8641 deg	207.2987 mm 8.1614 in	2.1934 deg
231.0 mm 9.0945 in	22.5923 mm 0.8895 in	27.7331 deg	208.4077 mm 8.2050 in	2.1815 deg
232.0 mm 9.1339 in	22.4845 mm 0.8852 in	27.6033 deg	209.5155 mm 8.2486 in	2.1698 deg
233.0 mm 9.1732 in	22.3777 mm 0.8810 in	27.4748 deg	210.6223 mm 8.2922 in	2.1582 deg
234.0 mm 9.2126 in	22.2720 mm 0.8768 in	27.3476 deg	211.7280 mm 8.3357 in	2.1467 deg
235.0 mm 9.2520 in	22.1673 mm 0.8727 in	27.2215 deg	212.8327 mm 8.3792 in	2.1354 deg
236.0 mm 9.2913 in	22.0637 mm 0.8686 in	27.0967 deg	213.9363 mm 8.4227 in	2.1241 deg
237.0 mm 9.3307 in	21.9610 mm 0.8646 in	26.9731 deg	215.0390 mm 8.4661 in	2.1130 deg
238.0 mm 9.3701 in	21.8594 mm 0.8606 in	26.8506 deg	216.1406 mm 8.5095 in	2.1021 deg
239.0 mm 9.4094 in	21.7588 mm 0.8566 in	26.7293 deg	217.2412 mm 8.5528 in	2.0913 deg
240.0 mm 9.4488 in	21.6591 mm 0.8527 in	26.6092 deg	218.3409 mm 8.5961 in	2.0805 deg
241.0 mm 9.4882 in	21.5603 mm 0.8488 in	26.4901 deg	219.4397 mm 8.6394 in	2.0699 deg
242.0 mm 9.5276 in	21.4626 mm 0.8450 in	26.3722 deg	220.5374 mm 8.6826 in	2.0595 deg
243.0 mm 9.5669 in	21.3657 mm 0.8412 in	26.2554 deg	221.6343 mm 8.7258 in	2.0491 deg
244.0 mm 9.6063 in	21.2698 mm 0.8374 in	26.1396 deg	222.7302 mm 8.7689 in	2.0388 deg
245.0 mm 9.6457 in	21.1747 mm 0.8337 in	26.0249 deg	223.8253 mm 8.8120 in	2.0287 deg
246.0 mm 9.6850 in	21.0805 mm 0.8299 in	25.9112 deg	224.9195 mm 8.8551 in	2.0187 deg
247.0 mm 9.7244 in	20.9873 mm 0.8263 in	25.7986 deg	226.0127 mm 8.8981 in	2.0088 deg
248.0 mm 9.7638 in	20.8948 mm 0.8226 in	25.6869 deg	227.1052 mm 8.9411 in	1.9989 deg
249.0 mm 9.8031 in	20.8032 mm 0.8190 in	25.5763 deg	228.1968 mm 8.9841 in	1.9892 deg
250.0 mm 9.8425 in	20.7125 mm 0.8155 in	25.4667 deg	229.2875 mm 9.0271 in	1.9796 deg
251.0 mm 9.8819 in	20.6226 mm 0.8119 in	25.3580 deg	230.3774 mm 9.0700 in	1.9701 deg
252.0 mm 9.9213 in	20.5335 mm 0.8084 in	25.2503 deg	231.4665 mm 9.1129 in	1.9607 deg
253.0 mm 9.9606 in	20.4451 mm 0.8049 in	25.1435 deg	232.5549 mm 9.1557 in	1.9514 deg
254.0 mm 10.0000 in	20.3576 mm 0.8015 in	25.0377 deg	233.6424 mm 9.1985 in	1.9422 deg
255.0 mm 10.0394 in	20.2709 mm 0.7981 in	24.9328 deg	234.7291 mm 9.2413 in	1.9330 deg
256.0 mm 10.0787 in	20.1849 mm 0.7947 in	24.8288 deg	235.8151 mm 9.2841 in	1.9240 deg
257.0 mm 10.1181 in	20.0997 mm 0.7913 in	24.7257 deg	236.9003 mm 9.3268 in	1.9151 deg
258.0 mm 10.1575 in	20.0152 mm 0.7880 in	24.6235 deg	237.9848 mm 9.3695 in	1.9062 deg
259.0 mm 10.1969 in	19.9315 mm 0.7847 in	24.5221 deg	239.0685 mm 9.4121 in	1.8974 deg
260.0 mm 10.2362 in	19.8485 mm 0.7814 in	24.4216 deg	240.1515 mm 9.4548 in	1.8888 deg
261.0 mm 10.2756 in	19.7662 mm 0.7782 in	24.3220 deg	241.2338 mm 9.4974 in	1.8802 deg
262.0 mm 10.3150 in	19.6846 mm 0.7750 in	24.2232 deg	242.3154 mm 9.5400 in	1.8716 deg
263.0 mm 10.3543 in	19.6037 mm 0.7718 in	24.1252 deg	243.3963 mm 9.5825 in	1.8632 deg
264.0 mm 10.3937 in	19.5235 mm 0.7686 in	24.0281 deg	244.4765 mm 9.6251 in	1.8549 deg
265.0 mm 10.4331 in	19.4440 mm 0.7655 in	23.9317 deg	245.5560 mm 9.6676 in	1.8466 deg
266.0 mm 10.4724 in	19.3651 mm 0.7624 in	23.8361 deg	246.6349 mm 9.7100 in	1.8384 deg
267.0 mm 10.5118 in	19.2869 mm 0.7593 in	23.7414 deg	247.7131 mm 9.7525 in	1.8303 deg
268.0 mm 10.5512 in	19.2094 mm 0.7563 in	23.6474 deg	248.7906 mm 9.7949 in	1.8223 deg
269.0 mm 10.5906 in	19.1325 mm 0.7532 in	23.5541 deg	249.8675 mm 9.8373 in	1.8143 deg
270.0 mm 10.6299 in	19.0563 mm 0.7502 in	23.4617 deg	250.9437 mm 9.8797 in	1.8064 deg
271.0 mm 10.6693 in	18.9806 mm 0.7473 in	23.3699 deg	252.0194 mm 9.9220 in	1.7986 deg
272.0 mm 10.7087 in	18.9056 mm 0.7443 in	23.2789 deg	253.0944 mm 9.9643 in	1.7909 deg
273.0 mm 10.7480 in	18.8312 mm 0.7414 in	23.1887 deg	254.1688 mm 10.0066 in	1.7832 deg
274.0 mm 10.7874 in	18.7574 mm 0.7385 in	23.0991 deg	255.2426 mm 10.0489 in	1.7756 deg
275.0 mm 10.8268 in	18.6843 mm 0.7356 in	23.0103 deg	256.3157 mm 10.0912 in	1.7681 deg
276.0 mm 10.8661 in	18.6117 mm 0.7327 in	22.9222 deg	257.3883 mm 10.1334 in	1.7606 deg
277.0 mm 10.9055 in	18.5396 mm 0.7299 in	22.8347 deg	258.4604 mm 10.1756 in	1.7533 deg
278.0 mm 10.9449 in	18.4682 mm 0.7271 in	22.7480 deg	259.5318 mm 10.2178 in	1.7459 deg
279.0 mm 10.9843 in	18.3973 mm 0.7243 in	22.6619 deg	260.6027 mm 10.2599 in	1.7387 deg
279.4 mm 11.0000 in	18.3691 mm 0.7232 in	22.6276 deg	261.0309 mm 10.2768 in	1.7358 deg
280.0 mm 11.0236 in	18.3270 mm 0.7215 in	22.5765 deg	261.6730 mm 10.3021 in	1.7315 deg
281.0 mm 11.0630 in	18.2572 mm 0.7188 in	22.4917 deg	262.7428 mm 10.3442 in	1.7243 deg
282.0 mm 11.1024 in	18.1880 mm 0.7161 in	22.4076 deg	263.8120 mm 10.3863 in	1.7173 deg
283.0 mm 11.1417 in	18.1193 mm 0.7134 in	22.3242 deg	264.8807 mm 10.4284 in	1.7103 deg
284.0 mm 11.1811 in	18.0512 mm 0.7107 in	22.2414 deg	265.9488 mm 10.4704 in	1.7033 deg
285.0 mm 11.2205 in	17.9836 mm 0.7080 in	22.1592 deg	267.0164 mm 10.5125 in	1.6964 deg
286.0 mm 11.2598 in	17.9165 mm 0.7054 in	22.0776 deg	268.0835 mm 10.5545 in	1.6896 deg
287.0 mm 11.2992 in	17.8499 mm 0.7028 in	21.9967 deg	269.1501 mm 10.5965 in	1.6828 deg
288.0 mm 11.3386 in	17.7839 mm 0.7002 in	21.9163 deg	270.2161 mm 10.6384 in	1.6761 deg
289.0 mm 11.3780 in	17.7183 mm 0.6976 in	21.8366 deg	271.2817 mm 10.6804 in	1.6694 deg
290.0 mm 11.4173 in	17.6532 mm 0.6950 in	21.7574 deg	272.3468 mm 10.7223 in	1.6628 deg
291.0 mm 11.4567 in	17.5887 mm 0.6925 in	21.6789 deg	273.4113 mm 10.7642 in	1.6563 deg
292.0 mm 11.4961 in	17.5246 mm 0.6899 in	21.6009 deg	274.4754 mm 10.8061 in	1.6498 deg
293.0 mm 11.5354 in	17.4610 mm 0.6874 in	21.5235 deg	275.5390 mm 10.8480 in	1.6434 deg
294.0 mm 11.5748 in	17.3978 mm 0.6850 in	21.4466 deg	276.6022 mm 10.8898 in	1.6370 deg
295.0 mm 11.6142 in	17.3352 mm 0.6825 in	21.3704 deg	277.6648 mm 10.9317 in	1.6307 deg
296.0 mm 11.6535 in	17.2730 mm 0.6800 in	21.2946 deg	278.7270 mm 10.9735 in	1.6244 deg
297.0 mm 11.6929 in	17.2112 mm 0.6776 in	21.2195 deg	279.7888 mm 11.0153 in	1.6181 deg
298.0 mm 11.7323 in	17.1499 mm 0.6752 in	21.1448 deg	280.8501 mm 11.0571 in	1.6120 deg
299.0 mm 11.7717 in	17.0891 mm 0.6728 in	21.0707 deg	281.9109 mm 11.0989 in	1.6058 deg
300.0 mm 11.8110 in	17.0287 mm 0.6704 in	20.9972 deg	282.9713 mm 11.1406 in	1.5998 deg
301.0 mm 11.8504 in	16.9687 mm 0.6681 in	20.9241 deg	284.0313 mm 11.1823 in	1.5937 deg
302.0 mm 11.8898 in	16.9092 mm 0.6657 in	20.8516 deg	285.0908 mm 11.2240 in	1.5878 deg
303.0 mm 11.9291 in	16.8501 mm 0.6634 in	20.7796 deg	286.1499 mm 11.2657 in	1.5818 deg
304.0 mm 11.9685 in	16.7914 mm 0.6611 in	20.7081 deg	287.2086 mm 11.3074 in	1.5759 deg
304.8 mm 12.0000 in	16.7448 mm 0.6592 in	20.6513 deg	288.0552 mm 11.3408 in	1.5712 deg
305.0 mm 12.0079 in	16.7332 mm 0.6588 in	20.6371 deg	288.2668 mm 11.3491 in	1.5701 deg
306.0 mm 12.0472 in	16.6753 mm 0.6565 in	20.5666 deg	289.3247 mm 11.3907 in	1.5643 deg
307.0 mm 12.0866 in	16.6179 mm 0.6542 in	20.4966 deg	290.3821 mm 11.4324 in	1.5585 deg
308.0 mm 12.1260 in	16.5609 mm 0.6520 in	20.4271 deg	291.4391 mm 11.4740 in	1.5528 deg
309.0 mm 12.1654 in	16.5043 mm 0.6498 in	20.3580 deg	292.4957 mm 11.5156 in	1.5472 deg
310.0 mm 12.2047 in	16.4480 mm 0.6476 in	20.2895 deg	293.5520 mm 11.5572 in	1.5415 deg
311.0 mm 12.2441 in	16.3922 mm 0.6454 in	20.2214 deg	294.6078 mm 11.5987 in	1.5360 deg
312.0 mm 12.2835 in	16.3367 mm 0.6432 in	20.1537 deg	295.6633 mm 11.6403 in	1.5304 deg
313.0 mm 12.3228 in	16.2817 mm 0.6410 in	20.0866 deg	296.7183 mm 11.6818 in	1.5249 deg
314.0 mm 12.3622 in	16.2270 mm 0.6389 in	20.0199 deg	297.7730 mm 11.7233 in	1.5195 deg
315.0 mm 12.4016 in	16.1727 mm 0.6367 in	19.9536 deg	298.8273 mm 11.7649 in	1.5141 deg
316.0 mm 12.4409 in	16.1188 mm 0.6346 in	19.8878 deg	299.8812 mm 11.8063 in	1.5087 deg
317.0 mm 12.4803 in	16.0652 mm 0.6325 in	19.8224 deg	300.9348 mm 11.8478 in	1.5034 deg
318.0 mm 12.5197 in	16.0120 mm 0.6304 in	19.7575 deg	301.9880 mm 11.8893 in	1.4981 deg
319.0 mm 12.5591 in	15.9591 mm 0.6283 in	19.6930 deg	303.0409 mm 11.9307 in	1.4928 deg
320.0 mm 12.5984 in	15.9067 mm 0.6262 in	19.6289 deg	304.0933 mm 11.9722 in	1.4876 deg

If you need values for tonearms outside this range of sizes, please let us know.