Tone arms - diameter MV 101, HMV 102, and HMV 145

[Tomasz]

Hi everyone,

I'm Tomasz, and I'm excited to join this forum. I have been interested in wind-up gramophones for a while and have been looking forward to connecting with like-minded individuals.
I have a question: Could somebody possibly help me with information about the diameter of the following tone arms: HMV 101, HMV 102, and HMV 145 (both on the sound box side and the horn side)?
I'll be really grateful.

Best regards,
Tomasz

[mrrgstuff]

Hi Tomasz, welcome to the group!

I only have some of the info, but I will post it here. Measurements will be approximate. I believe the 145 will have the same diameter at the soundbox end as the 102.

Hope that helps,

[Inigo]

All the reentrants from the 102 on, have the same tonearm diameter to receive the 5a/b and no16 soundbox: 102-104-130-145-152-153-158-163-193-194-202-203 and all other models from this era that take these soundboxes.
Indeed the difference is only in the 18mm/20mm tonearm end, but the rubber connectors are interchangeable, as they have the same outer diameter, that fits in the back neck of the no4/5a/5b/16 soundboxes.

[Tomasz]

Hi. Thank you so much for your answers mrrgstuff and Inigo! I do appreciate. This is really helpful.