These old bows seem to often use a rounded belly so they do look stout, a bit like a mini ELB in some ways. This one is a really mini little crossbow, 25mm wide at the centre and 19mm thick and only 63 cm ntn. Funny thing it’s design is exactly the same as a larger one. The last normal sized one I built mostly recently is 95cm long, 30mm thick and 40mm wide at centre but only draws to 150lb - actually it draws to about 180lb but it uses a slightly shortened draw for longevity.